Question: what over the counter drugs are anticholinergic?
Answer: Many older adults continue to use OTC drugs that have anticholinergic properties. Older antihistamines— such as diphenhydramine, brompheniramine, chlorpheniramine, dimen- hydrinate, doxylamine, and meclizine, as well as the urinary tract antimuscarinic agent oxybutynin—are strongly anticholinergic.