Clinical data
Trade namesAfobazole
Other namesObenoxazine
Routes of
Legal status
Legal status
  • US: Unscheduled Not FDA approved
Pharmacokinetic data
Bioavailability43.64%, pronounced first-pass effect
Metabolismextensive hepatic
Onset of action0.85±0.13 hours
Elimination half-life0.82±0.54 hours
  • 4-[2-[(6-ethoxy-1H-benzimidazol-2-yl)sulfanyl]ethyl]morpholine
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Molar mass307.41 g·mol−1
3D model (JSmol)
  • CCOc3ccc2nc(SCCN1CCOCC1)[nH]c2c3
  • InChI=1S/C15H21N3O2S/c1-2-20-12-3-4-13-14(11-12)17-15(16-13)21-10-7-18-5-8-19-9-6-18/h3-4,11H,2,5-10H2,1H3,(H,16,17) checkY
 ☒NcheckY (what is this?)  (verify)
Afobazole from Russia

Fabomotizole (INN;[1] brand name Afobazole) is an anxiolytic drug launched in Russia in the early 2000s. It produces anxiolytic and neuroprotective effects without any sedative or muscle relaxant actions.[citation needed] Its mechanism of action remains poorly defined however, with GABAergic, NGF- and BDNF-release-promoting, MT1 receptor agonism, MT3 receptor antagonism, and sigma agonism suggested as potential mechanisms. Fabomotizole was shown to inhibit MAO-A reversibly and there might be also some involvement with serotonin receptors.[2][3][4][5][6] Clinical trials have shown fabomotizole to be well tolerated and reasonably effective for the treatment of anxiety.[7]

Experiments of mice have shown antimutagenic and antiteratogenic properties.[8]

Fabomotizole has found little clinical use outside Russia and has not been evaluated by the FDA.

See also


  1. ^ "International Nonproprietary Names for Pharmaceutical Substances (INN)" (PDF). WHO Drug Information. 26 (1): 63. 2012. Retrieved 21 March 2015.
  2. ^ Neznamov GG, Siuniakov SA, Chumakov DV, Bochkarev VK, Seredenin SB (2001). "[Clinical study of the selective anxiolytic agent afobazol]". Eksperimental'naia i Klinicheskaia Farmakologiia. 64 (2): 15–19. PMID 11548440.
  3. ^ Silkina IV, Gan'shina TC, Seredin SB, Mirzoian RS (2005). "[Gabaergic mechanism of cerebrovascular and neuroprotective effects of afobazole and picamilon]". Eksperimental'naia i Klinicheskaia Farmakologiia. 68 (1): 20–24. PMID 15786959.
  4. ^ Seredin SB, Melkumian DS, Val'dman EA, Iarkova MA, Seredina TC, Voronin MV, Lapitskaia AS (2006). "[Effects of afobazole on the BDNF content in brain structures of inbred mice with different phenotypes of emotional stress reaction]". Eksperimental'naia i Klinicheskaia Farmakologiia. 69 (3): 3–6. PMID 16878488.
  5. ^ Antipova TA, Sapozhnikova DS, Bakhtina LI, Seredenin SB (2009). "[Selective anxiolytic afobazole increases the content of BDNF and NGF in cultured hippocampal HT-22 line neurons]". Eksperimental'naia i Klinicheskaia Farmakologiia. 72 (1): 12–14. PMID 19334503.
  6. ^ Seredenin SB, Antipova TA, Voronin MV, Kurchashova SY, Kuimov AN (July 2009). "Interaction of afobazole with sigma1-receptors". Bulletin of Experimental Biology and Medicine. 148 (1): 42–44. doi:10.1007/s10517-009-0624-x. PMID 19902093. S2CID 37411324.
  7. ^ Medvedev VE, Trosnova AP, Dobrovol'skiĭ AV (2007). "[Psychopharmacotherapy of anxiety disorders in patients with cardio-vascular diseases: the use of aphobazole]". Zhurnal Nevrologii I Psikhiatrii Imeni S.S. Korsakova. 107 (7): 25–29. PMID 18379478.
  8. ^ Durnev AD, Zhanataev AK, Shreder OV, Seredenin SB (Jan–Feb 2009). "[Antimutagenic and antiteratogenic properties of afobazole]". Eksperimental'naia i Klinicheskaia Farmakologiia. 72 (1): 46–51. PMID 19334511.