An anticholinergic is a class of pharmaceutical used to block acetylcholine in the nervous system. The include atropine, scopolamine and tubocurarine. They reduce involuntary muscle movement. They are used to treat disorders resulting from excessive involuntary movement such as gastritis, diarrhea, cystitis, asthma, chronic bronchitis and motion sickness.

Although generally safe for short term use, long term use provides numerous risks including ataxia, dementia, decreased mucous production, photophobia, diplopia and tachycardia.

Anticholinergic at Wikipedia

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