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
Mode of contraception that should be avoided in epilepsy is 
Select and explain. 
A. Oral contraceptive pills, B. Condoms, C. Intrauterine contraceptive devises, D. Post-coital pills
A: Oral contraceptive pills
Answer: A: Oral contraceptive pills 
Explanation: Antiepileptic drugs such as phenytoin,carbamazepine,phenobarbitone are enzyme inducers which when used with oral contraceptives can cause its failure. (Ref.Essentials of medical pharmacology TD Tripathi 7th edition Page no.326)