Triampizine is a potent gastric antisecretory agent without the side effects of anticholinergic drugs. Triampizine may react with the excipient magnesium stearate and is used in studies of hyperacidity[1][2].
References
[1] Robert I Meltzer, et al. US3320126A. 1967. [2] H Jacobson, et al. Application of differential thermal analysis to compatibility and stability problems in penicillin-stearic acid mixtures. J Pharm Sci. 1969, 58, 5. DOI:10.1002/jps.2600580529