PRODUCTS of alterations on molecule Oxotremorine Arcecoline Alterations on molecule Ester function  Choline moiety Onium group comes from seeds of betel nut (SN) Arcecoline Areca catechu Produces tremors in experimental animals Studied as a drug treatment of Alzheimer disease Oxotremorine Euphoria-creating substance arcecoline PRODUCTS of Cholinergic Receptor Antagonists Acetylcholine Chloride Carbachol Metacholine Chloride, USP Bethanechol Chloride, USP Pilocarpine Hydrochloride