Medical Definition of Alkaloid
Alkaloid: A member of a large group of chemicals that are made by plants and have nitrogen in them. Many alkaloids possess potent pharmacologic effects. The alkaloids include cocaine, nicotine, strychnine, caffeine, morphine, pilocarpine, atropine, methamphetamine, mescaline, ephedrine, and tryptamine.
Quick GuideHeartburn: Causes, Symptoms, Remedies, Treatments
Subscribe to MedicineNet's General Health Newsletter