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Vomiting with CHC — DFSRH MCQ

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ModerateCombined hormonal contraceptionVomiting with CHCDFSRH

A 23-year-old woman vomits one hour after taking a combined pill. She has no further vomiting and has a spare pill available. What would you advise this patient?

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

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Correct answer: B — Take another active pill as soon as possible

Vomiting soon after taking an active combined pill may prevent absorption, so another active pill should be taken. Ongoing vomiting or severe diarrhoea would require missed-pill style precautions. The clinical pearl is to distinguish a single vomiting episode from prolonged malabsorption.

Reference: FSRH Combined Hormonal Contraception Guideline; UKMEC 2025; BNF