What is an atropine?

Atropine is a tropane alkaloid derived from plants of the Solanaceae family, particularly belladonna (Atropa belladonna). It functions as an anticholinergic agent, blocking the action of the neurotransmitter acetylcholine at muscarinic receptors. Atropine is used in medicine to treat bradycardia, reduce salivation during surgery, and as an antidote for certain types of poisoning. It can also cause dilated pupils and increased heart rate as side effects.