Emergency contraception enzyme inducer — GPhC CRA MCQ
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Correct answer: C — Discuss levonorgestrel dose adjustment under local guidance and arrange urgent sexual health follow-up
Enzyme-inducing medicines such as carbamazepine can reduce the effectiveness of oral emergency contraception. Copper intrauterine device is the most effective option, but if declined, local guidance may support adjusted levonorgestrel dosing rather than ulipristal in enzyme induction. Follow-up and pregnancy testing advice are important. The patient also needs counselling about ongoing contraception and STI risk.
Reference: BNF; Faculty of Sexual & Reproductive Healthcare guidance