Poison in Deadly Nightshade
This page is the CodyCross answer for the clue below from Working From Home, Group 1230, Puzzle 3 (Conference Calls).
Question is: Poison in Deadly Nightshade
and the answer is: ATROPINE
Word Meaning:
ATROPINE — (toxicology, pharmacology) An alkaloid extracted from the plant deadly nightshade (Atropa belladonna) and other sources, such as the seeds of the thorn-apple. Though overdoses would be fatal it is used as a drug in medicine for its paralytic effects (e.g. in surgery to relax muscles, in dentistry to dry the mouth, in ophthalmology to dilate the pupils).
Definitions from Wiktionary.