Adverse Effects

Antimuscarinic drugs have a number of central nervous system effects, including drowsiness, mental slowness, inattention, restlessness, and confusion, agitation, delusions, hallucinations, and mood changes. Other common effects include dryness of the mouth, blurring of vision, mydriasis, urinary retention, nausea and vomiting, constipation, tachycardia, tachypnea, increased intraocular pressure, palpitations, and cardiac arrhythmias.

Contraindications: Acetylcholine-blocking drugs should be avoided in patients with prostatic hyperplasia, obstructive gastrointestinal disease, or angle-closure glaucoma.