Telenzepine dihydrochloride is a selective and orally active muscarinic M1 receptor antagonist with a Ki of 0.94 nM. It inhibits gastric acid secretion and has antiulcer effects. In vitro, at submicromolar concentrations (100 nM), it abolishes responses to muscarine or the muscarinic component of acetylcholine. In vivo, intravenous administration potently inhibits gastric acid secretion in Ghosh-Schild rats and chronic fistula rats. Oral treatment shows significantly longer-duration antiulcer effects in modified Shay rats.
- Selective muscarinic M1 receptor antagonist
- Orally active
- Inhibits gastric acid secretion
- Antiulcer effects
- Abolishes muscarinic responses at submicromolar concentrations
- Potent inhibition of gastric acid secretion in vivo