Atropine can be deadly. The substance derives its name from Atropos, one of the three Fates. In Greek mythology, the Fates chose how a person was to die.
The second part of the Latin name (belladonna, pretty woman) comes from the fact that it can be used to temporarily disable the eye's adaptation to light. This will lead to "big" pupils, which were considered pretty in a woman of the Renaissance. Atropine can also be used to resuscitate patients that have gone into cardiac arrest. It can also be used as an antidote to certain poison gases and insecticides.