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
All of the following antiepileptic can lead to weight loss except 
Select and explain. 
A. Felbamate, B. Valproate, C. Zonisamide, D. Topiramate
B: Valproate
Answer: B: Valproate 
Explanation: Zonisamide, Topiramate, Felbamate: causes weight loss.

→ Topiramate is used with Phenteramine to treat obesity.

Sodium valproate, Perampanel, Gabapentin: causes weight  gain.