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| AHFS/Drugs.com | International Drug Names |
| Routes of administration | Oral |
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| Formula | C15H17NS2 |
| Molar mass | 275.43 g·mol−1 |
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Tipepidine (INN; also known as tipepidine hibenzate (JAN); brand names Asverin, Antupex, Asvelik, Asvex, Bitiodin, Cofdenin A, Hustel, Nodal, and Sotal) is a synthetic, non-opioid antitussive and expectorant of the thiambutene class. [1] [2] It acts as an inhibitor of G protein-coupled inwardly-rectifying potassium channels (GIRKs). [3] The drug was discovered in the 1950s, [4] and was developed in Japan in 1959. [5] It is used as the hibenzate and citrate salts. [1] [5]
The usual dose is 20 mg every 4–6 hours.[ citation needed ] Possible side effects of tipepidine, especially in overdose, may include drowsiness, vertigo, delirium, disorientation, loss of consciousness, and confusion. [5]
Tipepidine has been investigated as a potential psychiatric drug. It is being investigated in depression, [3] [6] [7] obsessive-compulsive disorder, [8] and attention-deficit hyperactivity disorder (ADHD). [9] [10] [11] Through inhibition of GIRK channels, tipepidine increases dopamine levels in the nucleus accumbens, but without increasing locomotor activity or producing methamphetamine-like behavioral sensitization, and this action appears to be at least partly responsible for its antidepressant-like effects in rodents. [12] [13]