List of investigational insomnia drugs
This is a list of investigational insomnia drugs, or drugs that are currently under development for clinical use for the treatment of insomnia but are not yet approved. They may also be referred to as investigational hypnotics.
Chemical/generic names are listed first, with developmental code names, synonyms, and brand names in parentheses. The format of list items is "Name (Synonyms) – Mechanism of Action [Reference]".
This list was last comprehensively updated in September 2025. It is likely to become outdated with time.
Under development
Preregistration
- Tasimelteon (Hetlioz; BMS-214778; VEC-162) – melatonin MT1 and MT2 receptor agonist[1]
Phase 3
- Brexpiprazole (Rexulti; Lu-AF41156; OPC-34712; OPDC-34712) – atypical antipsychotic (non-selective monoamine receptor modulator)[2]
- Cannabidiol soft-gel (CBD soft-gel; CBD-TPM) — cannabinoid and various actions[3][4]
- Diphenhydramine/lorazepam/zolpidem (SM-1; SM1) – combination of diphenhydramine (antihistamine and anticholinergic), lorazepam (benzodiazepine and GABAA receptor positive allosteric modulator), and zolpidem (nonbenzodiazepine/Z-drug and GABAA receptor positive allosteric modulator)[5]
- Zuranolone (BIIB-125; S-812217; SAGE-217; SGE-797; Zurzuvae) – GABAA receptor positive allosteric modulator and neurosteroid[6]
Phase 2
- Dexmedetomidine buccal (RE-03) — α2-adrenergic receptor agonist[7]
- Lumateperone (Caplyta; ITI-007; ITI-722) – atypical antipsychotic (non-selective monoamine receptor modulator)[8]
- Pimavanserin (Nuplazid; ACP-103; BVF-048) – serotonin 5-HT2A receptor antagonist[9]
- Piromelatine (Neu-P11) – melatonin MT1 and MT2 receptor agonist, serotonin 5-HT1A and 5-HT1D receptor agonist, and serotonin 5-HT2B receptor antagonist[10]
- Seltorexant (JNJ-42847922; JNJ-7922; MIN-202) – orexin OX2 receptor antagonist[11]
- Sunobinop (IMB-115; IT-1315; RSC117957; S-117957; V-117957) – nociceptin receptor agonist[12]
- Trazodone extended-release (AF-1161; DDS-04A; Oleptro; Triticum AC; Trittico) – serotonin 5-HT1A receptor partial agonist, serotonin 5-HT2A and 5-HT2C receptor antagonist, α1- and α2-adrenergic receptor antagonist, weak serotonin reuptake inhibitor, and other actions[13]
Phase 1/2
- SVT-4A1011 – microbiome modulator and live microbial therapeutic[14]
Phase 1
Preclinical
Research
Phase unknown
Not under development
Suspended
- Osemozotan (MKC-242; MN-305) – serotonin 5-HT1A receptor agonist[26][27]
No development reported
- Filorexant (MK-6096) – orexin OX1 and OX2 receptor antagonist[28]
- HEC-83518 – orexin receptor antagonist[29][30]
- IN-AQUL-001 – undefined mechanism of action[31][32]
- JNJ-48816274 – orexin OX2 receptor antagonist[33]
- Lirequinil (RO-413696) – GABAA receptor positive allosteric modulator and nonbenzodiazepine/benzoquinolizinone [34]
- Lorediplon (GF-015535-00) – GABAA receptor positive allosteric modulator and nonbenzodiazepine/pyrazolopyrimidine[35]
- MK-1064 – orexin OX2 receptor antagonist[36]
- Research programme: psychophysiological insomnia therapeutics - Neurim Pharmaceuticals – melatonin and serotonin receptor agonists[37]
- Zolpidem topical gel (TR-396) – GABAA receptor positive allosteric modulator and nonbenzodiazepine/Z-drug[38]
Discontinued
- ACT-462206 – orexin OX1 and OX2 receptor antagonist[39]
- Adipiplon (NG-273) – GABAA receptor positive allosteric modulator[40]
- ADX-10061 (NNC 01-0687; CEE-03-310; NNC-687) – dopamine D1 receptor antagonist[41][42][43]
- Almorexant (ACT-078573) – orexin OX1 and OX2 receptor antagonist[44]
- ANPH-101 – undefined mechanism of action[45]
- Atagabalin (PD-0200390) – gabapentinoid (α2δ voltage-gated calcium channel ligand)[46]
- Eplivanserin (Ciltyri; Sliwens; SR–46349; SR–46349B; SR–46615A) – serotonin 5-HT2A receptor antagonist[47]
- Esmirtazapine (ORG-50081; SCH-900265; (S)-mirtazapine) – histamine H1 receptor antagonist, serotonin 5-HT2 receptor antagonist, and α2-adrenergic receptor antagonist[48]
- Gaboxadol (LU-02030; LU-2-030; MK-0928; OV-101; THIP) – GABAA receptor agonist[49]
- GT-2203 – histamine H3 receptor agonist[50]
- Indiplon (NBI-34060) – GABAA receptor positive allosteric modulator and nonbenzodiazepine/pyrazolopyrimidine[51][52][53][54]
- LY-2624803 (HY-10275) – histamine H1 receptor inverse agonist and serotonin 5-HT2A receptor antagonist[55]
- Nabilone (Cesamet) – cannabinoid CB1 and CB2 receptor agonist[56]
- NBI-75043 – antihistamine (histamine H1 receptor antagonist)[57]
- Nelotanserin (APD-125; RVT-102) – serotonin 5-HT2A receptor antagonist[58]
- NGD-962 (NGD 96-2) – GABAA receptor modulator[59]
- Paliperidone (Invega; JNS-007ER; RO-76477; 9-hydroxyrisperidone) – atypical antipsychotic (non-selective monoamine receptor modulator)[60]
- PD-0299685 (PF-299685) – gabapentinoid (α2δ voltage-gated calcium channel ligand)[61]
- Pruvanserin (EMD-281014; LY-2422347; LSN-2411347) – serotonin 5-HT2A receptor antagonist[62]
- Remimazolam (HR-7056; Byfavo) – GABAA receptor positive allosteric modulator and benzodiazepine[63]
- Seganserin (R-56413) – serotonin 5-HT2A and 5-HT2C receptor antagonist[64]
- Suvecaltamide (CX-8998; JZP-385; MK-8998) – T-type calcium channel inhibitor[65]
- Tasipimidine (ODM-105) – α2A-adrenergic receptor agonist[66]
- Tesamorelin (Egrifta; MDVTM; TH-9507; ThGRF 1-44) – growth hormone-releasing hormone (GHRH) receptor agonist[67]
- Tiagabine (A-70569; CEP-6671; Gabitril; NO-050328; NO-328) – GABA transporter 1 (GAT-1) blocker and GABA reuptake inhibitor[68]
- Triazolam intranasal (Hypnostat; TGAR01H) – GABAA receptor positive allosteric modulator and benzodiazepine[69]
- Volinanserin (M-100907; MDL-100907) – serotonin 5-HT2A receptor antagonist[70]
Formal development never or not yet started
- Histone deacetylase inhibitors (HDACi) (e.g., butyric acid (butyrate), tributyrin)[71][72][73][74]
Clinically used drugs
Approved drugs
GABAA receptor positive allosteric modulators
Benzodiazepines
- Dimdazenil (Junoenil; EVT-201) – GABAA receptor partial positive allosteric modulator and benzodiazepine[75][76][77]
- Quazepam (Doral; SCH-16134) – GABAA receptor positive allosteric modulator and benzodiazepine[78][79]
- Other benzodiazepines (GABAA receptor positive allosteric modulators) (e.g., estazolam, flurazepam, temazepam, triazolam, others)[80][79]
Nonbenzodiazepines/Z-drugs
- Eszopiclone (Esopiclone; Estorra; Lunesta; Lunivia; S-Zopiclone; SEP-0227018; SEP-190; SEP-225441) – GABAA receptor positive allosteric modulator and nonbenzodiazepine/Z-drug[81]
- Zaleplon (Sonata; Zerene; CL–284846; L–846; LJC–10846) – GABAA receptor positive allosteric modulator and nonbenzodiazepine/Z-drug[82]
- Zolpidem extended-release (Ambien CR; FK-199B; Stilnox; Zolpidem XR) – GABAA receptor positive allosteric modulator and nonbenzodiazepine/Z-drug[83]
- Zolpidem oral spray (Zolpimist) – GABAA receptor positive allosteric modulator and nonbenzodiazepine/Z-drug[84]
- Zolpidem sublingual (Edluar; Sublinox; OX-22) – GABAA receptor positive allosteric modulator and nonbenzodiazepine/Z-drug[85]
Orexin receptor antagonists
- Daridorexant (Quviviq; ACT-541468; nemorexant) – orexin OX1 and OX2 receptor antagonist[86]
- Fazamorexant (Mengping; HY-901139; YZJ-1139) – orexin OX1 and OX2 receptor antagonist[87]
- Lemborexant (Dayvigo; E-2006) – orexin OX1 and OX2 receptor antagonist[88]
- Suvorexant (Belsomra; MK-4305) – orexin OX1 and OX2 receptor antagonist[89]
- Vornorexant (Vorzzz; ORN-0829; TS-142) – orexin OX1 and OX2 receptor antagonist[90]
Melatonin receptor agonists
Other drugs
- Doxepin low dose (Silenor; SO-101) – antihistamine (histamine H1 receptor antagonist)[93]
- Niaprazine (Nopron) – serotonin 5-HT2A receptor antagonist and α1-adrenergic receptor antagonist
- Phenibut (Anvifen) – GABAB receptor agonist and gabapentinoid (α2δ voltage-gated calcium channel ligand)[94]
- Tetrahydrocannabinol/cannabinol/cannabidiol (THC/CBN/CBD; Zenivol; ZTL-101) – combination of tetrahydrocannabinol (THC) (cannabinoid), cannabinol (CBN) (cannabinoid), and cannabidiol (CBD) (cannabinoid)[95][96]
Withdrawn drugs
GABAA receptor positive allosteric modulators
Discontinued drugs
GABAA receptor positive allosteric modulators
- Barbiturates (e.g., amobarbital, pentobarbital, phenobarbital, secobarbital) – GABAA receptor positive allosteric modulators
- Piperidinediones (e.g., glutethimide) – GABAA receptor positive allosteric modulators
- Quinazolinones (e.g., methaqualone) – GABAA receptor positive allosteric modulators
Other drugs
- Fenadiazole (phénadiazole; Hypnazol, Eudormil, Viodor) – unknown mechanism of action
Off-label drugs
- α1-Adrenergic receptor antagonists (e.g., prazosin)[98][99]
- α2-Adrenergic receptor agonists (e.g., clonidine, tizanidine)[100][101][102][103][104][105][106]
- Agomelatine (Valdoxan, Thymanax) – melatonin MT1 and MT2 receptor agonist and weak serotonin 5-HT2C receptor antagonist[99]
- Amanita muscaria or muscimol – GABAA receptor agonist[107][108]
- Antihistamines (histamine H1 receptor antagonists) (e.g., diphenhydramine, doxylamine, hydroxyzine, cyproheptadine, promethazine)[80][109]
- Atypical antipsychotics (e.g., quetiapine, olanzapine, risperidone)[99]
- Cannabinoids (cannabinoid receptor modulators) (e.g., cannabis, dronabinol/tetrahydrocannabinol (THC), cannabidiol (CBD))[110]
- Gabapentinoids (α2δ voltage-gated calcium channel ligands) (e.g., gabapentin, pregabalin, gabapentin enacarbil)[99]
- Herbal supplements (e.g., chamomile, kava, lavender, passion flower, theanine, valerian)
- Melatonin (over-the-counter) – melatonin MT1 and MT2 receptor agonist
- Neurosteroids (GABAA receptor positive allosteric modulators) (e.g., oral progesterone)[111]
- Serotonin precursors (indirect serotonin receptor agonists) (e.g., tryptophan, 5-HTP)[112][113]
- Tetracyclic antidepressants (TeCAs) (e.g., mirtazapine)[99]
- Trazodone (Desyrel) – serotonin 5-HT1A receptor partial agonist, serotonin 5-HT2A and 5-HT2C receptor antagonist, α1- and α2-adrenergic receptor antagonist, weak serotonin reuptake inhibitor, and other actions[99]
- Tricyclic antidepressants (TCAs) (e.g., amitriptyline, high-dose doxepin, trimipramine)[99]
See also
- List of investigational drugs
- List of investigational narcolepsy and hypersomnia drugs
- List of investigational chronobiotics
- Hypnotic
References
- ↑ "Tasimelteon - Vanda Pharmaceuticals - AdisInsight".
- ↑ "Brexpiprazole - Lundbeck/Otsuka - AdisInsight".
- ↑ "Cannabidiol soft-gel - Avecho Biotechnology - AdisInsight".
- ↑ Stevens, Ben (13 July 2026). "World's Largest CBD Insomnia Trial Could Hand Avecho an Australian Monopoly". Business of Cannabis. Retrieved 8 August 2026.
- ↑ "Diphenhydramine/Lorazepam/Zolpidem - Eusol Biotech - AdisInsight".
- ↑ "Zuranolone - Biogen/SAGE Therapeutics - AdisInsight".
- ↑ "Dexmedetomidine - Reconnect Labs - AdisInsight".
- ↑ "Lumateperone - Intra-Cellular Therapies - AdisInsight".
- ↑ "Pimavanserin - ACADIA Pharmaceuticals - AdisInsight".
- ↑ "Piromelatine - Neurim Pharmaceuticals - AdisInsight".
- ↑ "Seltorexant - Janssen Research & Development/Minerva Neurosciences - AdisInsight".
- ↑ "Sunobinop - Imbrium Therapeutics/Shionogi - AdisInsight".
- ↑ "Trazodone - Angelini Group/Labopharm - AdisInsight".
- ↑ "SVT 4A1011 - AdisInsight".
- ↑ "Ramelteon controlled-release - Overseas Pharmaceuticals - AdisInsight".
- ↑ "APSTZD - Apsen Farmaceutica - AdisInsight".
- ↑ "HS 10506 - AdisInsight".
- ↑ "TPT 0601 - AdisInsight".
- ↑
- ↑ "Delving into the Latest Updates on YZG-331 with Synapse". Synapse. 8 May 2025. Retrieved 6 October 2025.
- ↑ Tang B, Yu Y, Yu F, Fang J, Wang G, Jiang J, Han Q, Shi J, Zhang J (June 2022). "The mechanism study of YZG-331 on sedative and hypnotic effects". Behav Brain Res. 428 113885. doi:10.1016/j.bbr.2022.113885. PMID 35398229.
- ↑ "Trazodone - Spektus Pharma - AdisInsight".
- ↑ "Midazolam sublingual film - Aoxing Pharmaceutical Company - AdisInsight".
- ↑ "OP 010 - AdisInsight".
- ↑ "Zolpidem extended release - Beijing CoSci Med Tech - AdisInsight".
- ↑ "Osemozotan". AdisInsight. 11 December 2025. Retrieved 7 August 2026.
- ↑ "SEC Filing". MediciNova. 17 September 2009. Retrieved 7 August 2026.
For example, in October 2007, MediciNova announced that its Phase II clinical trial of MN-305 for the treatment of insomnia failed to achieve statistical significance in its primary endpoint; as a result, MediciNova terminated development of MN-305 for the treatment of insomnia. [...] Phase II clinical trial in insomnia completed in Q4, 2007†† [...] †† In the Phase II clinical trial conducted on MN-305 in insomnia, the predefined statistical endpoint of the clinical trial was not achieved; therefore, MediciNova terminated any further development of MN-305 for the treatment of insomnia. [...]
- ↑ "Filorexant - AdisInsight".
- ↑ "HEC 83518 - AdisInsight".
- ↑
- ↑ "IN AQUL 001 - AdisInsight".
- ↑ "Delving into the Latest Updates on IN-AQUL-001 with Synapse".
- ↑ "JNJ 48816274 - AdisInsight".
- ↑ "Lirequinil". AdisInsight. 25 July 2006. Retrieved 15 January 2026.
- ↑ "Lorediplon - Ferrer - AdisInsight".
- ↑ "MK 1064 - AdisInsight".
- ↑ "Research programme: Psychophysiological insomnia therapeutics - Neurim Pharmaceuticals - AdisInsight".
- ↑ "Zolpidem topical gel - Tritech Biopharmaceuticals - AdisInsight".
- ↑ "ACT 462206 - AdisInsight".
- ↑ "Adipiplon - AdisInsight".
- ↑ "ADX 10061 - AdisInsight".
- ↑ Eder DN (February 2002). "CEE-03-310 CeNeS pharmaceuticals". Curr Opin Investig Drugs. 3 (2): 284–288. PMID 12020061.
CEE-03-310 is a selective dopamine D1-like receptor antagonist with no appreciable binding affinity for other receptors. Although originally developed by Novo Nordisk A/S as NNC-687 for the treatment of schizophrenia, the company changed its therapeutic focus in the mid-1990s and the full rights to CEE-03-310 and several related compounds were subsequently granted to CeNeS Pharmaceuticals in 1999. CeNeS is currently investigating the drug's potential in the treatment of insomnia and alcohol dependency [340965], [382293], [401496],[416026]. A phase II, double-blind, placebo-controlled trial of CEE-03-310 demonstrated a dose-dependent enhancement of NREM sleep at the beginning of the night without any effects on the quantity of REM sleep [410739].
- ↑ Eder DN, Zdravkovic M, Wildschiødtz G (2003). "Selective alterations of the first NREM sleep cycle in humans by a dopamine D1 receptor antagonist (NNC-687)". J Psychiatr Res. 37 (4): 305–312. doi:10.1016/s0022-3956(03)00007-4. PMID 12765853.
- ↑ "Almorexant - AdisInsight".
- ↑ "ANPH 101 - AdisInsight".
- ↑ "Atagabalin - AdisInsight".
- ↑ "Eplivanserin - AdisInsight".
- ↑ "Esmirtazapine - AdisInsight".
- ↑ "Gaboxadol - Lundbeck A/S - AdisInsight".
- ↑ "GT 2203 - AdisInsight".
- ↑ "Indiplon - AdisInsight".
- ↑ "Delving into the Latest Updates on Indiplon with Synapse".
- ↑
- ↑ "Indiplon: Indiplon modified-release, Indiplon MR, NBI 34060, NBI 34060 modified-release, NBI 34060 MR". Drugs in R&D. 3 (3): 197–199. 2002. doi:10.2165/00126839-200203030-00012. ISSN 1174-5886. PMID 12099167. Retrieved 17 September 2025.
- ↑ "LY 2624803". AdisInsight. 5 November 2023. Retrieved 6 October 2025.
- ↑ "Nabilone - AdisInsight".
- ↑ "NBI 75043 - AdisInsight".
- ↑ "Nelotanserin - Sio Gene Therapies - AdisInsight".
- ↑ "NGD 962 - AdisInsight".
- ↑ "Paliperidone - Johnson & Johnson - AdisInsight".
- ↑ "PD 0299685 - AdisInsight".
- ↑ "Pruvanserin". AdisInsight. 19 August 2014. Retrieved 16 January 2026.
- ↑ "Remimazolam tosylate - Jiangsu Hengrui Medicine - AdisInsight".
- ↑ Baxter G, Kennett G, Blaney F, Blackburn T (March 1995). "5-HT2 receptor subtypes: a family re-united?". Trends Pharmacol Sci. 16 (3): 105–110. doi:10.1016/s0165-6147(00)88991-9. PMID 7792930.
- ↑ "Suvecaltamide - Merck & Co - AdisInsight".
- ↑ "Tasipimidine - Orion - AdisInsight".
- ↑ "Tesamorelin - Theratechnologies - AdisInsight".
- ↑ "Tiagabine". AdisInsight. 24 October 2021. Retrieved 17 January 2026.
- ↑ "Triazolam intranasal - Fabre Kramer - AdisInsight".
- ↑ "Volinanserin - AdisInsight".
- ↑ Wang Z, Wang Z, Lu T, Chen W, Yan W, Yuan K, Shi L, Liu X, Zhou X, Shi J, Vitiello MV, Han Y, Lu L (October 2022). "The microbiota-gut-brain axis in sleep disorders". Sleep Med Rev. 65 101691. doi:10.1016/j.smrv.2022.101691. PMID 36099873.
Tributyrin, as a butyrate pro-drug, improved NREM sleep in rats, an effect mediated through the vagus in the hepatoportal region [110]. A recent study in young subjects showed that sleep quality was positively associated with higher relative abundance of butyrate-producing genera [111].
- ↑ Szentirmai É, Millican NS, Massie AR, Kapás L (May 2019). "Butyrate, a metabolite of intestinal bacteria, enhances sleep". Sci Rep. 9 (1) 7035. Bibcode:2019NatSR...9.7035S. doi:10.1038/s41598-019-43502-1. PMC 6504874. PMID 31065013.
Oral gavage administration of tributyrin, a butyrate pro-drug, elicited an almost 50% increase in non-rapid-eye movement sleep (NREMS) in mice for 4 hours after the treatment. Similarly, intraportal injection of butyrate led to prompt and robust increases in NREMS in rats. In the first 6 hours after the butyrate injection, NREMS increased by 70%.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ↑ Wang Z, Wang Z, Lu T, Yuan G, Chen W, Jin J, Jiang X, Yan W, Yuan K, Zou G, Bao Y, Shi J, Liu X, Wei H, Han Y, Lu L (June 2025). "Gut microbiota regulate insomnia-like behaviors via gut-brain metabolic axis". Mol Psychiatry. 30 (6): 2597–2611. doi:10.1038/s41380-024-02867-0. PMID 39658705.
Tributyrin administration led to a significant 39.50% reduction of wakefulness during the post-administration period (Fig. 3C, F). The decrease in wakefulness was accompanied by a significant 100.05% increase in NREM sleep and a substantial 77.99% increase in REM sleep (Fig. 3D–F).
- ↑ Bohnen JL, Roytman S, Wigstrom TP, Vangel RK, Barr JE, Carli G, Parks SM, Mittal H, Martino C, Kanel P, Albin RL, Bohnen NI (January 2026). "Dietary tributyrin supplementation in Parkinson's disease: An open-label target engagement study". Neurotherapeutics. 23 (1) e00791. doi:10.1016/j.neurot.2025.e00791. PMC 12976542. PMID 41271518.
Sleep and heart rate data obtained via Oura™ biometric ring monitoring were largely unremarkable, although deep sleep proportion increased significantly (on average, 21.9 % greater proportion of nightly deep sleep) as a function of treatment.
- ↑ "Dimdazenil - Evotec/Zhejiang Jingxin Pharmaceutical - AdisInsight".
- ↑ Syed YY (May 2024). "Dimdazenil: First Approval". Drugs. 84 (5): 607–611. doi:10.1007/s40265-024-02020-9. PMID 38546956.
- ↑ Wang W, Fu W, Zhu H, Ma J, Zhang J, Qi J (2024). "Progress in GABAA receptor agonists for insomnia disorder". Front Pharmacol. 15 1432726. doi:10.3389/fphar.2024.1432726. PMC 11573549. PMID 39564117.
- ↑ "Quazepam - AdisInsight".
- 1 2 Moniri NH (November 2019). "Reintroduction of quazepam: an update on comparative hypnotic and adverse effects". Int Clin Psychopharmacol. 34 (6): 275–285. doi:10.1097/YIC.0000000000000277. PMID 31274695.
- 1 2 "Drugs for chronic insomnia". Med Lett Drugs Ther. 65 (1667): 1–6. January 2023. doi:10.58347/tml.2023.1667a. PMID 36630579.
- ↑ "Eszopiclone - Sumitomo Pharma America - AdisInsight".
- ↑ "Zaleplon - Pfizer - AdisInsight".
- ↑ "Zolpidem extended release - Cosette Pharmaceuticals/Sanofi-aventis - AdisInsight".
- ↑ "Zolpidem oral spray - Amherst Pharmaceuticals - AdisInsight".
- ↑ "Zolpidem sublingual - Orexo - AdisInsight".
- ↑ "Daridorexant - Idorsia Pharmaceuticals - AdisInsight".
- ↑ "YZJ 1139 - AdisInsight".
- ↑ "Lemborexant - Eisai - AdisInsight".
- ↑ "Suvorexant - Merck & Co - AdisInsight".
- ↑ "Vornorexant - Taisho Pharmaceutical - AdisInsight".
- ↑ "Melatonin controlled-release - Neurim Pharmaceuticals - AdisInsight".
- ↑ "Ramelteon - Takeda - AdisInsight".
- ↑ "Doxepin low dose - Somaxon Pharmaceuticals - AdisInsight".
- ↑ Penzak SR, Bulloch M (June 2024). "Phenibut: Review and Pharmacologic Approaches to Treating Withdrawal". J Clin Pharmacol. 64 (6): 652–671. doi:10.1002/jcph.2414. PMID 38339875.
β-Phenyl-γ-aminobutyric acid (phenibut) is an analog of the inhibitory neurotransmitter γ-aminobutyric acid (GABA) that was first synthesized in Russia in the early 1960s. It is marketed as a nootropic (smart drug) to improve cognitive performance, and to treat generalized and social anxiety, insomnia, and alcohol withdrawal. [...] β-Phenyl-γ-aminobutyric acid (phenibut) is a glutamic acid analog, first synthesized by Perekalin and colleagues at the Herzen Pedagogic Institute in St Petersburg, Russia, in 1963.1 The brand names for phenibut include Anvifen, Citrocard, Fenibut, Noofen, and others.2,3 For over 50 years, phenibut has been available in Eastern European countries, including Belarus, Estonia, Kazakhstan, Latvia, Russia, and Ukraine, as a prescription medication. It is used to treat a variety of central nervous system disorders, including generalized and social anxiety, post-traumatic stress disorder (PTSD), depression, insomnia, vestibular disorders, alcohol withdrawal, stuttering, attention deficit hyperactivity disorder, motor tics, and restless leg syndrome.1,4,5
- ↑ "Cannabidiol/Tetrahydrocannabinol - Zelira Therapeutics - AdisInsight".
- ↑ Walsh JH, Maddison KJ, Rankin T, Murray K, McArdle N, Ree MJ, Hillman DR, Eastwood PR (November 2021). "Treating insomnia symptoms with medicinal cannabis: a randomized, crossover trial of the efficacy of a cannabinoid medicine compared with placebo". Sleep. 44 (11) zsab149. doi:10.1093/sleep/zsab149. PMC 8598183. PMID 34115851.
- ↑ "Zolpidem sublingual - Paratek Pharmaceuticals - AdisInsight".
- ↑ Krystal AD (December 2015). "New Developments in Insomnia Medications of Relevance to Mental Health Disorders". The Psychiatric Clinics of North America. 38 (4): 843–860. doi:10.1016/j.psc.2015.08.001. PMC 5972036. PMID 26600112.
- 1 2 3 4 5 6 7 Atkin T, Comai S, Gobbi G (April 2018). "Drugs for Insomnia beyond Benzodiazepines: Pharmacology, Clinical Applications, and Discovery". Pharmacological Reviews. 70 (2): 197–245. doi:10.1124/pr.117.014381. PMID 29487083. S2CID 3578916.
- ↑ Naguy A (2016). "Clonidine Use in Psychiatry: Panacea or Panache". Pharmacology. 98 (1–2): 87–92. doi:10.1159/000446441. PMID 27161101.
Moreover, clonidine helps in the treatment of neuroleptic-induced akathisia, stimulant-induced insomnia and clozapine-induced sialorrhea. Moreover, clonidine seems to be an attractive option targeting insomnia in ADHD [10] and remain a good remedy for paediatric insomnia in general [10] , and a case series has also reported that clonidine seems to be beneficial and fairly well tolerated in intractable sleep disorders in children and young adults with neurodevelopmental disorders [11] .
- ↑ Bamgbade OA, Tai-Osagbemi J, Bamgbade DO, Murphy-Akpieyi O, Fadire A, Soni NK, Mumporeze L (June 2022). "Clonidine is better than zopiclone for insomnia treatment in chronic pain patients". J Clin Sleep Med. 18 (6): 1565–1571. doi:10.5664/jcsm.9930. PMC 9163629. PMID 35112665.
- ↑ Nguyen M, Tharani S, Rahmani M, Shapiro M (March 2014). "A review of the use of clonidine as a sleep aid in the child and adolescent population". Clin Pediatr (Phila). 53 (3): 211–216. doi:10.1177/0009922813502123. PMID 24027233.
- ↑ Wilens TE, Biederman J, Spencer T (1994). "Clonidine for sleep disturbances associated with attention-deficit hyperactivity disorder". J Am Acad Child Adolesc Psychiatry. 33 (3): 424–426. doi:10.1097/00004583-199403000-00018. PMID 8169189.
- ↑ Broese M, Riemann D, Hein L, Nissen C (September 2012). "α-Adrenergic receptor function, arousal and sleep: mechanisms and therapeutic implications". Pharmacopsychiatry. 45 (6): 209–216. doi:10.1055/s-0031-1299728. PMID 22290201.
Tizanidine is a centrally acting α2 -receptor agonist, structurally related to clonidine. [...] In a study by Tanaka et al. [ 75 ] tizanidine was used in children with spastic quadriplegia to treat refractory sleep disturbances. Tizanidine treatment improved sleep induction and/or maintenance in 61.9 % of the children.
- ↑ Smith HS, Barton AE (2000). "Tizanidine in the management of spasticity and musculoskeletal complaints in the palliative care population". Am J Hosp Palliat Care. 17 (1): 50–58. doi:10.1177/104990910001700111. PMID 11094920.
Tizanidine can cause sedation, which is minimized by dose titration. When taken at night, patients report improvement in getting to sleep and little drowsiness or "hangover sensation" upon waking. Tizanidine is potentially helpful to many palliative care patients with chronic muscle pain and sleep disturbances.
- ↑ Ordak M, Galazka A, Nasierowski T, Muszynska E, Bujalska-Zadrozny M (April 2023). "Reasons, Form of Ingestion and Side Effects Associated with Consumption of Amanita muscaria". Toxics. 11 (4): 383. Bibcode:2023Toxic..11..383O. doi:10.3390/toxics11040383. PMC 10142736. PMID 37112610.
- ↑ Hartwig J, Kendrick J, Ahmad G, Cook J, Matthews DB, Sharma P (2025). "Exploring User Experiences with Amanita muscaria: A Thematic Analysis of Reddit Online Forum Discussions". Subst Use Misuse. 60 (7): 952–961. doi:10.1080/10826084.2025.2476141. PMID 40057818.
- ↑ King JD (January 2025). "Promethazine is not a good option to aid sleep quality, especially for people using psychiatric services". BJPsych Bull: 1–3. doi:10.1192/bjb.2024.108. PMID 39758034.
- ↑ Ried K, Tamanna T, Matthews S, Sali A (June 2023). "Medicinal cannabis improves sleep in adults with insomnia: a randomised double-blind placebo-controlled crossover study". J Sleep Res. 32 (3) e13793. doi:10.1111/jsr.13793. PMID 36539991.
- ↑ Memi E, Pavli P, Papagianni M, Vrachnis N, Mastorakos G (August 2024). "Diagnostic and therapeutic use of oral micronized progesterone in endocrinology". Rev Endocr Metab Disord. 25 (4): 751–772. doi:10.1007/s11154-024-09882-0. PMC 11294403. PMID 38652231.
- ↑ Sutanto CN, Loh WW, Kim JE (January 2022). "The impact of tryptophan supplementation on sleep quality: a systematic review, meta-analysis, and meta-regression". Nutr Rev. 80 (2): 306–316. doi:10.1093/nutrit/nuab027. PMID 33942088.
- ↑ Maffei ME (December 2020). "5-Hydroxytryptophan (5-HTP): Natural Occurrence, Analysis, Biosynthesis, Biotechnology, Physiology and Toxicology". Int J Mol Sci. 22 (1): 181. doi:10.3390/ijms22010181. PMC 7796270. PMID 33375373.
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