This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti Cholinergic, Subject name: Pharmacology
Most effective agent to prevent motion sickness is- 
Select and explain. 
A. Ephedrine, B. Nedocromil, C. Cyproheptidine, D. Hyoscine
D: Hyoscine
Answer: D: Hyoscine 
Explanation: Ans. is 'd' i.e., Hyoscine o Motion sickness is more easily prevented than cured.o Transdermal hyoscine (scopolamine) is the best agent for the prevention of motion sickness.o Antihistamines can also be used for prevention.