The most common adverse reactions reported in patients treated with propiverine include dry mouth, headache, accommodation disorder, constipation, abdominal pain, dyspepsia and fatigue ^L2315.

Propiverine may cause drowsiness and blurred vision. This may impair the ability to exert activities that require mental alertness such as operating a motor vehicle or other machinery, or to perform hazardous work while taking this drug ^L2315.

There have been reports of QT interval prolongation with antimuscarinic medications in the same class of drugs of propiverine hydrochloride. Some drugs that may cause QT/QTc interval prolongation may increase the risk of a rare, but serious ventricular arrhythmia called torsades de pointes. Patients at risk for QT/QTc interval prolongation, such as those with diagnosed heart failure, long QT syndrome, recent significant hypokalemia episodes or receiving other drugs known to prolong QT/QTc, should be closely monitored while treated with propiverine. Patients who experience prolonged QT/QTc or symptoms of possible arrhythmias including dizziness, palpitations or fainting should be electrocardiographically evaluated and monitored for electrolyte disturbances ^L2315.

Propiverine, like other anticholinergics, induces mydriasis. Therefore, the risk to induce acute angle-closure glaucoma in individuals predisposed with narrow angles of the anterior chamber may be increased. Drugs of this class, including propiverine, have been reported to induce or precipitate acute angle-closure glaucoma ^L2315.

No clinical data are available on the use of propiverine in pregnant women. Studies in animals have shown reproductive toxicity ^L2315.