KnowraHyoscyamineLinked fromLinked fromThe 3 pages that link to Hyoscyamine, each with the reason it gives.All 3Broader topic 2Related 1ScopolamineRelated: It belongs to the same plant-alkaloid family as scopolamine.Atropa belladonnaBroader topic: It is a major alkaloid in the plant and contributes to its toxic effects.Tropane alkaloidBroader topic: It is a major natural antimuscarinic member of the class.