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
Which of the following drugs is not hypoglycemic? 
Select and explain. 
A. Ethosuxinide, B. Tolbutamide, C. Glibenclamide, D. Chlorpropamide
A: Ethosuxinide
Answer: A: Ethosuxinide 
Explanation: None