This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
Choline esters like carbachol are most likely to cause which of the following adverse effects 
Select and explain. 
A. Delirium, B. Anhydrosis (dry skin), C. Salivation, D. Tachycardia
C: Salivation
Answer: C: Salivation 
Explanation: Diarrhea, salivation, and lacrimation may be seen. The hea rate is usually slowed. Choline esters do not cross the blood-brain barrier, and therefore delirium is not an adverse effect. Ref:- KD Tripathi