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
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 Motion sickness is more easily prevented than cured. Transdermal hyoscine (scopolamine) is the best agent for the prevention of /notion sickness. Antihistamines can also be used for prevention.