How is anticholinergic therapy for Parkinson's?

Benzotropine, trihexyphenidyl, procyclidine, and biperiden. Antimuscarinic agents: Less efficacious than levodopa. Adjuvant role in antiparkinson's Induce mood changes (xerostomia, constipation [interfere w/GI peristalsis] and visual problems) Contraindicated for glaucoma