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. Hyoscine, D. Cyproheptadine
C: Hyoscine
Answer: C: Hyoscine 
Explanation: Moon sickness is more easily prevented than cured.
 Transdermal hyoscine (scopolamine) is the best agent for the prevention of motion sickness.
 Antihistamines can also be used for prevention.