Belladonna

Belladonna, the Deadly Nightshade (q.v.), Atropa Belladonna. Its active principle Atropine produces, in small doses, dryness of the mouth and headache. After poisonous doses the pupils become widely dilated, the pulse rapid, the skin is covered with a scarlatiniform rash, and a restless delirium supervenes. Belladonna poisoning occasionally occurs in children who have swallowed "eye drops".