Drotaverine hydrochloride is an analogue of papaverine with smooth muscle relaxant properties. It is a non-anticholinergic antispasmodic, which selectively inhibits phosphodiesterase IV and is accompanied by a mild calcium channel-blocking effect. Adverse effects with drotaverine hydrochloride, such as hypotension, vertigo, nausea, and palpitation, are mostly mild. It can be supposed that intravenous drotaverine hydrochloride might be a feasible antimotility alternative to intravenous hyoscine-N-butylbromide in ERCP. But there is no clear evidence to recommend the use of drotaverine hydrochloride as an antispasmodic during ERCP.