US2005176680A1PendingUtilityA1

Combination of sedative and a neurotransmitter modulator, and methods for improving sleep quality and treating depression

Assignee: SEPRACOR INCPriority: Dec 11, 2003Filed: Dec 8, 2004Published: Aug 11, 2005
Est. expiryDec 11, 2023(expired)· nominal 20-yr term from priority
A61P 43/00A61P 25/24A61P 25/20A61K 31/4985A61K 31/724A61K 31/137A61K 31/495A61K 45/06A61K 31/138
57
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Claims

Abstract

One aspect of the present invention relates to pharmaceutical compositions containing two or more active agents that when taken together can be used to treat, e.g., insomnia and/or depression. The first component of the pharmaceutical composition is a GABA receptor modulating compound. The second component of the pharmaceutical composition is a serotonin reuptake inhibitor, a norepinephrine reuptake inhibitor, a 5-HT 2A modulator, or dopamine reuptake inhibitor. In certain embodiments, the pharmaceutical composition comprises eszopiclone. In a preferred embodiment, the pharmaceutical composition comprises eszopiclone and fluoxetine. The present invention also relates to a method of treating a sleep abnormality, treating insomnia, treating depression, augmenting antidepressant therapy, eliciting a dose-sparing effect, reducing depression relapse, improving the efficacy of antidepressant therapy or improving the tolerability of antidepressant therapy, comprising co-administering to a patient in need thereof a GABA-receptor-modulating compound; and a SRI, NRI, 5-HT 2A modulator or DRI.

Claims

exact text as granted — not AI-modified
1 . A pharmaceutical composition comprising eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a serotonin reuptake inhibitor.  
     
     
         2 . A pharmaceutical composition comprising eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a serotonin reuptake inhibitor, wherein said serotonin reuptake inhibitor is citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, paroxetine, sertraline, clominpramine, femoxetine, indapline, alaprolclate, cericlamine, or ifoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         3 . The pharmaceutical composition of  claim 2 , wherein said serotonin reuptake inhibitor is fluoxetine, fluvoxamine, milnacipran, or paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         4 . The pharmaceutical composition of  claim 3 , wherein said serotonin reuptake inhibitor is fluoxetine, paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         5 . The pharmaceutical composition of  claim 4 , wherein said serotonin reuptake inhibitor is fluoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         6 . The pharmaceutical composition of  claim 5 , wherein said fluoxetine is fluoxetine hydrochloride, or a pharmaceutically acceptable solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         7 . A pharmaceutical composition consisting essentially of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a serotonin reuptake inhibitor; and at least one pharmaceutically acceptable carrier.  
     
     
         8 . A pharmaceutical composition consisting essentially of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a serotonin reuptake inhibitor, wherein said serotonin reuptake inhibitor is citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, paroxetine, sertraline, clominpramine, femoxetine, indapline, alaprolclate, cericlamine, or ifoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         9 . The pharmaceutical composition of  claim 8 , wherein said serotonin reuptake inhibitor is fluoxetine, fluvoxamine, milnacipran, or paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         10 . The pharmaceutical composition of  claim 9 , wherein said serotonin reuptake inhibitor is fluoxetine, paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         11 . The pharmaceutical composition of  claim 10 , wherein said serotonin reuptake inhibitor is fluoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         12 . The pharmaceutical composition of  claim 11 , wherein said fluoxetine is fluoxetine hydrochloride, or a pharmaceutically acceptable solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         13 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a serotonin reuptake inhibitor.  
     
     
         14 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a serotonin reuptake inhibitor, wherein said serotonin reuptake inibitor is citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, paroxetine, sertraline, clominpramine, femoxetine, indapline, alaprolclate, cericlamine, or ifoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         15 . The method of  claim 14 , wherein said serotonin reuptake inhibitor is fluoxetine, fluvoxamine, milnacipran, or paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         16 . The method of  claim 15 , wherein said serotonin reuptake inhibitor is fluoxetine, paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         17 . The method of  claim 16 , wherein said serotonin reuptake inhibitor is fluoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         18 . The method of  claim 17 , wherein said fluoxetine is fluoxetine hydrochloride, or a pharmaceutically acceptable solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         19 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a serotonin reuptake inhibitor; and at least one pharmaceutically acceptable carrier.  
     
     
         20 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a serotonin reuptake inhibitor, wherein said serotonin reuptake inibitor is citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, paroxetine, sertraline, clominpramine, femoxetine, indapline, alaprolclate, cericlamine, or ifoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         21 . The method of  claim 20 , wherein said serotonin reuptake inhibitor is fluoxetine, fluvoxamine, milnacipran, or paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         22 . The method of  claim 21 , wherein said serotonin reuptake inhibitor is fluoxetine, paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         23 . The method of  claim 22 , wherein said serotonin reuptake inhibitor is fluoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         24 . The method of  claim 23 , wherein said fluoxetine is fluoxetine hydrochloride, or a pharmaceutically acceptable solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         25 . The method of any one of claims  13  to 24, wherein said sleep abnormality is difficulty falling asleep, difficulty staying asleep, or waking up too early.  
     
     
         26 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a serotonin reuptake inhibitor.  
     
     
         27 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a serotonin reuptake inhibitor, wherein said serotonin reuptake inibitor is citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, paroxetine, sertraline, clominpramine, femoxetine, indapline, alaprolclate, cericlamine, or ifoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         28 . The method of  claim 27 , wherein said serotonin reuptake inhibitor is fluoxetine, fluvoxamine, milnacipran, or paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         29 . The method of  claim 28 , wherein said serotonin reuptake inhibitor is fluoxetine, paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         30 . The method of  claim 29 , wherein said serotonin reuptake inhibitor is fluoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         31 . The method of  claim 30 , wherein said fluoxetine is fluoxetine hydrochloride, or a pharmaceutically acceptable solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         32 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a serotonin reuptake inhibitor; and at least one pharmaceutically acceptable carrier.  
     
     
         33 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a serotonin reuptake inhibitor, wherein said serotonin reuptake inibitor is citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, paroxetine, sertraline, clominpramine, femoxetine, indapline, alaprolclate, cericlamine, or ifoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         34 . The method of  claim 33 , wherein said serotonin reuptake inhibitor is fluoxetine, fluvoxamine, milnacipran, or paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         35 . The method of  claim 34 , wherein said serotonin reuptake inhibitor is fluoxetine, paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         36 . The method of  claim 35 , wherein said serotonin reuptake inhibitor is fluoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         37 . The method of  claim 36 , wherein said fluoxetine is fluoxetine hydrochloride, or a pharmaceutically acceptable solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         38 . The method of any of  claims 26  to  37 , wherein said insomnia is transient insomnia.  
     
     
         39 . The method of any of  claims 26  to  37 , wherein said insomnia is short-term insomnia.  
     
     
         40 . The method of any of  claims 26  to  37 , wherein said insomnia is chronic insomnia.  
     
     
         41 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a serotonin reuptake inhibitor.  
     
     
         42 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a serotonin reuptake inhibitor, wherein said serotonin reuptake inibitor is citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, paroxetine, sertraline, clominpramine, femoxetine, indapline, alaprolclate, cericlamine, or ifoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         43 . The method of  claim 42 , wherein said serotonin reuptake inhibitor is fluoxetine, fluvoxamine, milnacipran, or paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         44 . The method of  claim 43 , wherein said serotonin reuptake inhibitor is fluoxetine, paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         45 . The method of  claim 44 , wherein said serotonin reuptake inhibitor is fluoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         46 . The method of  claim 45 , wherein said fluoxetine is fluoxetine hydrochloride, or a pharmaceutically acceptable solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         47 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a serotonin reuptake inhibitor; and at least one pharmaceutically acceptable carrier.  
     
     
         48 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, a therapeutically effective amount of a serotonin reuptake inhibitor, wherein said serotonin reuptake inibitor is citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, paroxetine, sertraline, clominpramine, femoxetine, indapline, alaprolclate, cericlamine, or ifoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         49 . The method of  claim 48 , wherein said serotonin reuptake inhibitor is fluoxetine, fluvoxamine, milnacipran, or paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         50 . The method of  claim 49 , wherein said serotonin reuptake inhibitor is fluoxetine, paroxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         51 . The method of  claim 50 , wherein said serotonin reuptake inhibitor is fluoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         52 . The method of  claim 51 , wherein said fluoxetine is fluoxetine hydrochloride, or a pharmaceutically acceptable solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         53 . The method of any of  claims 41  to  52 , wherein said depression is a major depressive disorder.  
     
     
         54 . A pharmaceutical composition comprising eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a norepinephrine reuptake inhibitor.  
     
     
         55 . A pharmaceutical composition comprising eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a norepinephrine reuptake inhibitor, wherein said norepinephrine reuptake inhibitor is desipramine, maprotiline, lofepramine, reboxetine, oxaprotiline, fezolamine, tomoxetine, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         56 . The pharmaceutical composition of  claim 55 , wherein said norepinephrine reuptake inhibitor is desipramine, reboxetine, oxaprotiline, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         57 . The pharmaceutical composition of  claim 56 , wherein said norepinephrine reuptake inhibitor is (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         58 . A pharmaceutical composition consisting essentially of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a norepinephrine reuptake inhibitor; and at least one pharmaceutically acceptable carrier.  
     
     
         59 . A pharmaceutical composition consisting essentially of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a norepinephrine reuptake inhibitor, wherein said norepinephrine reuptake inhibitor is desipramine, maprotiline, lofepramine, reboxetine, oxaprotiline, fezolamine, tomoxetine, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         60 . The pharmaceutical composition of  claim 59 , wherein said norepinephrine reuptake inhibitor is desipramine, reboxetine, oxaprotiline, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         61 . The pharmaceutical composition of  claim 60 , wherein said norepinephrine reuptake inhibitor is (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         62 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of norepinephrine reuptake inhibitor.  
     
     
         63 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of norepinephrine reuptake inhibitor, wherein said norepinephrine reuptake inhibitor is desipramine, maprotiline, lofepramine, reboxetine, oxaprotiline, fezolamine, tomoxetine, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         64 . The method of  claim 63 , wherein said norepinephrine reuptake inhibitor is desipramine, reboxetine, oxaprotiline, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         65 . The method of  claim 64 , wherein said norepinephrine reuptake inhibitor is (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         66 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of norepinephrine reuptake inhibitor; 
 and at least one pharmaceutically acceptable carrier.    
     
     
         67 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of norepinephrine reuptake inhibitor, wherein said norepinephrine reuptake inhibitor is desipramine, maprotiline, lofepramine, reboxetine, oxaprotiline, fezolamine, tomoxetine, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         68 . The method of  claim 67 , wherein said norepinephrine reuptake inhibitor is desipramine, reboxetine, oxaprotiline, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         69 . The method of  claim 68 , wherein said norepinephrine reuptake inhibitor is (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         70 . The method of any one of claims  62  to 69, wherein said sleep abnormality is difficulty falling asleep, difficulty staying asleep, or waking up too early.  
     
     
         71 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of norepinephrine reuptake inhibitor.  
     
     
         72 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of norepinephrine reuptake inhibitor, wherein said norepinephrine reuptake inhibitor is desipramine, maprotiline, lofepramine, reboxetine, oxaprotiline, fezolamine, tomoxetine, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         73 . The method of  claim 72 , wherein said norepinephrine reuptake inhibitor is desipramine, reboxetine, oxaprotiline, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         74 . The method of  claim 73 , wherein said norepinephrine reuptake inhibitor is (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         75 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of norepinephrine reuptake inhibitor; 
 and at least one pharmaceutically acceptable carrier.    
     
     
         76 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of norepinephrine reuptake inhibitor, wherein said norepinephrine reuptake inhibitor is desipramine, maprotiline, lofepramine, reboxetine, oxaprotiline, fezolamine, tomoxetine, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt; solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         77 . The method of  claim 76 , wherein said norepinephrine reuptake inhibitor is desipramine, reboxetine, oxaprotiline, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         78 . The method of  claim 77 , wherein said norepinephrine reuptake inhibitor is (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         79 . The method of any of  claims 71  to  78 , wherein said insomnia is transient insomnia.  
     
     
         80 . The method of any of  claims 71  to  78 , wherein said insomnia is short-term insomnia.  
     
     
         81 . The method of any of  claims 71  to  78 , wherein said insomnia is chronic insomnia.  
     
     
         82 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of norepinephrine reuptake inhibitor.  
     
     
         83 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of norepinephrine reuptake inhibitor, wherein said norepinephrine reuptake inhibitor is desipramine, maprotiline, lofepramine, reboxetine, oxaprotiline, fezolamine, tomoxetine, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         84 . The method of  claim 83 , wherein said norepinephrine reuptake inhibitor is desipramine, reboxetine, oxaprotiline, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         85 . The method of  claim 84 , wherein said norepinephrine reuptake inhibitor is (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         86 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of norepinephrine reuptake inhibitor; 
 and at least one pharmaceutically acceptable carrier.    
     
     
         87 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of norepinephrine reuptake inhibitor, wherein said norepinephrine reuptake inhibitor is desipramine, maprotiline, lofepramine, reboxetine, oxaprotiline, fezolamine, tomoxetine, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         88 . The method of  claim 87 , wherein said norepinephrine reuptake inhibitor is desipramine, reboxetine, oxaprotiline, or (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         89 . The method of  claim 88 , wherein said norepinephrine reuptake inhibitor is (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         90 . The method of any of  claims 82  to  89 , wherein said depression is a major depressive disorder.  
     
     
         91 . A pharmaceutical composition comprising eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a dopamine reuptake inhibitor.  
     
     
         92 . A pharmaceutical composition comprising eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a dopamine reuptake inhibitor, said dopamine reuptake inhibitor is amineptine, bupropion, GBR-12935, venlafaxine, desmethylvenlafaxine, or 2β-propanoyl-3β-(4-tolyl)-tropane, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         93 . The pharmaceutical composition of  claim 92 , wherein said dopamine reuptake inhibitor is bupropion, or GBR-12935, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         94 . The pharmaceutical composition of  claim 93 , wherein said dopamine reuptake inhibitor is bupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         95 . The pharmaceutical composition of  claim 92 , wherein said dopamine reuptake inhibitor is venlafaxine, desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         96 . The pharmaceutical composition of  claim 95 , wherein said desmethylvenlafaxine is racemic desmethylvenlafaxine, (+)-desmethylvenlafaxine, or (−)-desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         97 . A pharmaceutical composition consisting essentially of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a dopamine reuptake inhibitor; and at least one pharmaceutically acceptable carrier.  
     
     
         98 . A pharmaceutical composition consisting essentially of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a dopamine reuptake inhibitor, said dopamine reuptake inhibitor is amineptine, bupropion, GBR-12935, venlafaxine, desmethylvenlafaxine, or 2β-propanoyl-3β-(4-tolyl)-tropane, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         99 . The pharmaceutical composition of  claim 98 , wherein said dopamine reuptake inhibitor is bupropion, or GBR-12935, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         100 . The pharmaceutical composition of  claim 99 , wherein said dopamine reuptake inhibitor is bupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         101 . The pharmaceutical composition of  claim 98 , wherein said dopamine reuptake inhibitor is venlafaxine, desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         102 . The pharmaceutical composition of  claim 101 , wherein said desmethylvenlafaxine is racemic desmethylvenlafaxine, (+)-desmethylvenlafaxine, or (−)-desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         103 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a dopamine reuptake inhibitor.  
     
     
         104 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a dopamine reuptake inhibitor, wherein said dopamine reuptake inhibitor is amineptine, bupropion, GBR-12935, venlafaxine, desmethylvenlafaxine, or 2β-propanoyl-3β-(4-tolyl)-tropane, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         105 . The method of  claim 104 , wherein said dopamine reuptake inhibitor is bupropion, or GBR-12935, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         106 . The method of  claim 105 , wherein said dopamine reuptake inhibitor is bupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         107 . The method of  claim 104 , wherein said dopamine reuptake inhibitor is venlafaxine, desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         108 . The method of  claim 107 , wherein said desmethylvenlafaxine is racemic desmethylvenlafaxine, (+)-desmethylvenlafaxine, or (−)-desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         109 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a dopamine reuptake inhibitor; and 
 at least one pharmaceutically acceptable carrier.    
     
     
         110 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a dopamine reuptake inhibitor, wherein said dopamine reuptake inhibitor is amineptine, bupropion, GBR-12935, venlafaxine, desmethylvenlafaxine, or 2β-propanoyl-3β-(4-tolyl)-tropane, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         111 . The method of  claim 110 , wherein said dopamine reuptake inhibitor is bupropion, or GBR-12935, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         112 . The method of  claim 111 , wherein said dopamine reuptake inhibitor is bupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         113 . The method of  claim 110 , wherein said dopamine reuptake inhibitor is venlafaxine, desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         114 . The method of  claim 113 , wherein said desmethylvenlafaxine is racemic desmethylvenlafaxine, (+)-desmethylvenlafaxine, or (−)-desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         115 . The method of any one of  claims 103  to  114 , wherein said sleep abnormality is difficulty falling asleep, difficulty staying asleep, or waking up too early.  
     
     
         116 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a dopamine reuptake inhibitor.  
     
     
         117 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a dopamine reuptake inhibitor, wherein said dopamine reuptake inhibitor is amineptine, bupropion, GBR-12935, venlafaxine, desmethylvenlafaxine, or 2β-propanoyl-3β-(4-tolyl)-tropane, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         118 . The method of  claim 117 , wherein said dopamine reuptake inhibitor is bupropion, or GBR-12935, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         119 . The method of  claim 118 , wherein said dopamine reuptake inhibitor is bupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         120 . The method of  claim 117 , wherein said dopamine reuptake inhibitor is venlafaxine, desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         121 . The method of  claim 120 , wherein said desmethylvenlafaxine is racemic desmethylvenlafaxine, (+)-desmethylvenlafaxine, or (−)-desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         122 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a dopamine reuptake inhibitor; and 
 at least one pharmaceutically acceptable carrier.    
     
     
         123 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a dopamine reuptake inhibitor, wherein said dopamine reuptake inhibitor is amineptine, bupropion, GBR-12935, venlafaxine, desmethylvenlafaxine, or 2β-propanoyl-3β-(4-tolyl)-tropane, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         124 . The method of  claim 123 , wherein said dopamine reuptake inhibitor is bupropion, or GBR-12935, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         125 . The method of  claim 124 , wherein said dopamine reuptake inhibitor is bupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         126 . The method of  claim 123 , wherein said dopamine reuptake inhibitor is venlafaxine, desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         127 . The method of  claim 126 , wherein said desmethylvenlafaxine is racemic desmethylvenlafaxine, (+)-desmethylvenlafaxine, or (−)-desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         128 . The method of any of  claims 116  to  127 , wherein said insomnia is transient insomnia.  
     
     
         129 . The method of any of  claims 116  to  127 , wherein said insomnia is short-term insomnia.  
     
     
         130 . The method of any of  claims 116  to  127 , wherein said insomnia is chronic insomnia.  
     
     
         131 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a dopamine reuptake inhibitor.  
     
     
         132 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a dopamine reuptake inhibitor, wherein said dopamine reuptake inhibitor is amineptine, bupropion, GBR-12935, venlafaxine, desmethylvenlafaxine, or 2β-propanoyl-3β-(4-tolyl)-tropane, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         133 . The method of  claim 132 , wherein said dopamine reuptake inhibitor is bupropion, or GBR-12935, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         134 . The method of  claim 133 , wherein said dopamine reuptake inhibitor is bupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         135 . The method of  claim 132 , wherein said dopamine reuptake inhibitor is venlafaxine, desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         136 . The method of  claim 135 , wherein said desmethylvenlafaxine is racemic desmethylvenlafaxine, (+)-desmethylvenlafaxine, or (−)-desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         137 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a dopamine reuptake inhibitor; and 
 at least one pharmaceutically acceptable carrier.    
     
     
         138 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a dopamine reuptake inhibitor, wherein said dopamine reuptake inhibitor is amineptine, bupropion, GBR-12935, venlafaxine, desmethylvenlafaxine, or 2β-propanoyl-3β-(4-tolyl)-tropane, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         139 . The method of  claim 138 , wherein said dopamine reuptake inhibitor is bupropion, or GBR-12935, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         140 . The method of  claim 139 , wherein said dopamine reuptake inhibitor is bupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         141 . The method of  claim 138 , wherein said dopamine reuptake inhibitor is venlafaxine, desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of either of them.  
     
     
         142 . The method of  claim 141 , wherein said desmethylvenlafaxine is racemic desmethylvenlafaxine, (+)-desmethylvenlafaxine, or (−)-desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         143 . The method of any of  claims 131  to  142 , wherein said depression is a major depressive disorder.  
     
     
         144 . A pharmaceutical composition comprising eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a 5-HT 2A  modulator.  
     
     
         145 . The pharmaceutical composition of  claim 144 , wherein the 5-HT2A modulator is a 5-HT 2A  antagonist.  
     
     
         146 . The pharmaceutical composition of  claim 144 , wherein the 5-HT2A modulator is a 5-HT 2A  inverse agonist.  
     
     
         147 . A pharmaceutical composition comprising eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a 5-HT 2A  modulator, wherein said 5 HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, phenylindole compounds A, piperidinyl compounds B, spiroazacyclic compounds C, or azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         148 . The pharmaceutical composition of  claim 147 , wherein said 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, or phenylindole compounds A, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co crystal of any one of them.  
     
     
         149 . The pharmaceutical composition of  claim 148 , wherein said 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, or fananserin, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         150 . The pharmaceutical composition of  claim 147 , wherein said 5-HT 2A  modulator, wherein said 5-HT 2A  modulator is piperidinyl compounds B, spiroazacyclic compounds C, or azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         151 . A pharmaceutical composition consisting essentially of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a 5-HT 2A  modulator; and at least one pharmaceutically acceptable carrier.  
     
     
         152 . The pharmaceutical composition of  claim 151 , wherein the 5-HT 2A  modulator is a 5-HT 2A  antagonist.  
     
     
         153 . The pharmaceutical composition of  claim 151 , wherein the 5-HT 2A  modulator is a 5-HT 2A  inverse agonist.  
     
     
         154 . A pharmaceutical composition consisting essentially of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a 5-HT 2A  modulator, wherein said 5 HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, phenylindole compounds A, piperidinyl compounds B, spiroazacyclic compounds C, or azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         155 . The pharmaceutical composition of  claim 154 , wherein said 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, or phenylindole compounds A, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         156 . The pharmaceutical composition of  claim 155 , wherein said 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, or fananserin, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         157 . The pharmaceutical composition of  claim 154 , wherein said 5-HT 2A  modulator, wherein said 5 HT 2A  modulator is piperidinyl compounds B, spiroazacyclic compounds C, or azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         158 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a 5-HT 2A  modulator.  
     
     
         159 . The method of  claim 158 , wherein the 5-HT 2A  modulator is a 5-HT 2A  antagonist.  
     
     
         160 . The method of  claim 158 , wherein the 5-HT 2A  modulator is a 5-HT 2A  inverse agonist.  
     
     
         161 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a 5-HT 2A  modulator, wherein said 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, phenylindole compounds A, piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         162 . The method of  claim 161 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM992, fananserin, oxazolidine compounds A, or phenylindole compounds A, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         163 . The method of  claim 162 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, or fananserin, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         164 . The method of  claim 161 , wherein the 5-HT 2A  modulator is piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         165 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a 5-HT 2A  modulator; and at least one pharmaceutically acceptable carrier.  
     
     
         166 . The method of  claim 165 , wherein the 5-HT 2A  modulator is a 5-HT 2A  antagonist.  
     
     
         167 . The method of  claim 165 , wherein the 5-HT 2A  modulator is a 5-HT 2A  inverse agonist.  
     
     
         168 . A method of treating a patient suffering from a sleep abnormality, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a 5-HT 2A  modulator, wherein said 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, phenylindole compounds A, piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         169 . The method of  claim 168 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, or phenylindole compounds A, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         170 . The method of  claim 169 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, or fananserin, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         171 . The method of  claim 168 , wherein the 5-HT 2A  modulator is piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         172 . The method of any one of  claims 158  to  171 , wherein said sleep abnormality is difficulty falling asleep, difficulty staying asleep, or waking up too early.  
     
     
         173 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a 5-HT 2A  modulator.  
     
     
         174 . The method of  claim 173 , wherein the 5-HT 2A  modulator is a 5-HT 2A  antagonist.  
     
     
         175 . The method of  claim 173 , wherein the 5-HT 2A  modulator is a 5-HT 2A  inverse agonist.  
     
     
         176 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a 5-HT 2A  modulator, wherein said 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, phenylindole compounds A, piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         177 . The method of  claim 176 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, or phenylindole compounds A, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         178 . The method of  claim 177 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, or fananserin, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         179 . The method of  claim 176 , wherein the 5-HT 2A  modulator is piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         180 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a 5-HT 2A  modulator; and at least one pharmaceutically acceptable carrier.  
     
     
         181 . The method of  claim 180 , wherein the 5-HT 2A  modulator is a 5-HT 2A  antagonist.  
     
     
         182 . The method of  claim 180 , wherein the 5-HT 2A  modulator is a 5-HT 2A  inverse agonist.  
     
     
         183 . A method of treating a patient suffering from insomnia, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a 5-HT 2A  modulator, wherein said 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, phenylindole compounds A, piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         184 . The method of  claim 183 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, or phenylindole compounds A, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         185 . The method of  claim 184 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, or fananserin, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         186 . The method of  claim 183 , wherein the 5-HT 2A  modulator is piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         187 . The method of any of  claims 173  to  186 , wherein said insomnia is transient insomnia.  
     
     
         188 . The method of any of  claims 173  to  186 , wherein said insomnia is short-term insomnia.  
     
     
         189 . The method of any of  claims 173  to  186 , wherein said insomnia is chronic insomnia.  
     
     
         190 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a 5-HT 2A  modulator.  
     
     
         191 . The method of  claim 190 , wherein the 5-HT 2A  modulator is a 5-HT 2A  antagonist.  
     
     
         192 . The method of  claim 190 , wherein the 5-HT 2A  modulator is a  5 -HT 2A  inverse agonist.  
     
     
         193 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof, and a therapeutically effective amount of a 5-HT 2A  modulator, wherein said 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, phenylindole compounds A, piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         194 . The method of  claim 193 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, or phenylindole compounds A, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         195 . The method of  claim 194 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, or fananserin, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         196 . The method of  claim 193 , wherein the 5-HT 2A  modulator is piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         197 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a 5-HT 2A  modulator; and at least one pharmaceutically acceptable carrier.  
     
     
         198 . The method of  claim 197 , wherein the 5-HT 2A  modulator is a 5-HT 2A  antagonist.  
     
     
         199 . The method of  claim 197 , wherein the 5-HT 2A  modulator is a 5-HT 2A  inverse agonist.  
     
     
         200 . A method of treating a patient suffering from depression, comprising the step of co-administering to a patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof; a therapeutically effective amount of a 5-HT 2A  modulator, wherein said 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, phenylindole compounds A, piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them; and at least one pharmaceutically acceptable carrier.  
     
     
         201 . The method of  claim 200 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, fananserin, oxazolidine compounds A, or phenylindole compounds A, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         202 . The method of  claim 201 , wherein the 5-HT 2A  modulator is MDL 100907, SR 46349B, YM 992, or fananserin, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         203 . The method of  claim 200 , wherein the 5-HT 2A  modulator is piperidinyl compounds B, spiroazacyclic compounds C, azacyclic compounds D, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         204 . The method of any of  claims 190  to  203 , wherein said depression is a major depressive disorder.  
     
     
         205 . A method for increasing the efficacy of antidepressant therapy in a patient comprising administering to the patient in need thereof, undergoing antidepressant therapy, a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         206 . A method for augmentation of antidepressant therapy in a patient comprising administering to the patient in need thereof, undergoing antidepressant therapy, a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         207 . A method for eliciting a dose sparing effect in a patient undergoing treatment with an antidepressant, comprising administering to the patient in need thereof, undergoing antidepressant therapy, a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         208 . A method for reducing depression relapse in a patient who received antidepressant treatment, comprising administering to the patient in need thereof a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         209 . The method of  claim 205 ,  206 ,  207  or  208 , wherein the eszopiclone is administered chronically or long-term.  
     
     
         210 . A method for improving the tolerability of antidepressant therapy in a patient suffering from depression, comprising administering to the patient in need thereof, undergoing antidepressant therapy, a therapeutically effective amount of eszopiclone, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal thereof.  
     
     
         211 . The method of any of  claims 205  to  210 , wherein the antidepressant is citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, paroxetine, sertraline, clominpramine, femoxetine, indapline, alaprolclate, cericlamine, ifoxetine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         212 . The method of any of  claims 205  to  210 , wherein the antidepressant is desipramine, maprotiline, lofepramine, reboxetine, oxaprotiline, fezolamine, tomoxetine, (S,S)-hydroxybupropion, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         213 . The method of any of claims  205  to 210, wherein the antidepressant is bupropion, venlafaxine, or desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         214 . The method of  claim 213 , wherien the desmethylvenlafaxine is racemic desmethylvenlafaxine, (+)-desmethylvenlafaxine, or (−)-desmethylvenlafaxine, or a pharmaceutically acceptable salt, solvate, clathrate, polymorph, or co-crystal of any one of them.  
     
     
         215 . The method of any of  claims 205  to  210 , wherein the antidepressant is a dopamine reuptake inhibitor or an atypical antidepressant.

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