<unk>  is a tropane alkaloid and anticholinergic medication used to treat certain types of nerve agent and pesticide poisonings as well as some types of slow heart rate, and to decrease saliva production during surgery. It is typically given intravenously or by injection into a muscle. Eye drops are also available which are used to treat uveitis and early amblyopia. The intravenous solution usually begins working within a minute and lasts half an hour to an hour. Large doses may be required to treat some poisonings. Common side effects include a dry mouth, large pupils, urinary retention, constipation, and a fast heart rate. It should generally not be used in people with angle closure glaucoma. While there is no evidence that its use during pregnancy causes birth defects, that has not been well studied. It is likely safe during breastfeeding. It is an antimuscarinic (a type of anticholinergic) that works by inhibiting the parasympathetic nervous system.<unk>  occurs naturally in a number of plants of the nightshade family, including deadly nightshade (belladonna), Jimson weed, and mandrake. It was first isolated in 1833, It is on the World Health Organization's List of Essential Medicines. It is available as a generic medication.
Atropine
Neostigmine
Physostigmine
Suxamethonium chloride
Pyridostigmine
Tripelennamine
Ephedrine
Gantacurium chloride