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Implant with enzyme inducer — DFSRH MCQ

Instant feedback + full explanation. One question, done properly.

ModerateProgestogen-only contraceptionImplant with enzyme inducerDFSRH

A 27-year-old woman with epilepsy taking carbamazepine asks for an implant. She wants the most reliable reversible method that is not affected by her tablets. What is the most appropriate contraceptive method?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: E — Copper IUD

Enzyme-inducing antiseizure medicines reduce effectiveness of the implant and POP. A copper IUD is not affected by enzyme induction and is highly effective. DMPA would also be an option if acceptable.

Reference: FSRH Progestogen-only Pills Guideline; FSRH Progestogen-only Implant Guideline; FSRH Progestogen-only Injectable Guideline; UKMEC 2025; BNF