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
Dryness of mouth caused by antipsychotics due to their - 
Select and explain. 
A. Anticholineic action, B. Antiodrenergic action, C. Antidopaminergic action, D. Antihistaminic action
A: Anticholineic action
Answer: A: Anticholineic action 
Explanation: Ans. is 'a' i.e., Anticholineic action o Antipsychotics has anticholinergic propey which can cause anticholinergic side effects, e.g., Dry mouth, bad taste, urinary retention, blurred vision, palpitation and constipation. o It is interesting to know that clozapine causes hypersalivation despite anticholinergic propey.