This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Anticholinergic which is teiary amine is? \nSelect and explain. \nA. Valethamate, B. Clidinium, C. Glycopyrolate, D. Hyoscine', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Valethamate Anticholinergic drugs Natural alkaloids Atropine, Hyoscine (Scopolamine). Semisvnthetic derivatives Homatropine, Atropine methonitrate, Hyoscine butyl bromide, Ipratropium bromide, Tiotropium bromide. Synthetic compounds a) Mydriatics : Cyclopentolate, Tropicamide. b) Antisecretory-antispasmodics : Quaternary compounds : Propantheline, Oxypheonium, Clidinium, Pipenzolate methyl bromide, Isopropamide. Glycopyrolate. Teiary amines : Dicyclomine, Valethamate, Pirenzepine c) Vasicosective : Oxbutynin, Flavoxate, Toltcrodine. d) Antiparkinsonian : Trihexphenidyl (Benzhexol), Procyclidine. Biperiden.", 'role': 'assistant'}]