This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
All the following drugs do not produce hirsutism except 
Select and explain. 
A. Cycloserin, B. Phenobarbitone, C. Phenytoin, D. Mycophenolate
C: Phenytoin
Answer: C: Phenytoin 
Explanation: Phenytoin adverse effects: Hirsutism, Gum hyperplasia, Hepatotoxicity etc Drugs causing hirsutism are ; Androgens,OCPs,phenytoin,minoxidil,diazoxide,cyclosporin. Ref: HL Sharma 3rd ed.Pg 530