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Nitrofurantoin urine colour — GPhC CRA MCQ

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HardInfectionsNitrofurantoin urine colourGPhC CRA

A patient prescribed nitrofurantoin for cystitis asks about dark urine after the first dose. What would you advise the patient?

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

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Correct answer: D — Explain that yellow-brown urine discolouration can occur and to seek help if unwell

Nitrofurantoin may discolour urine; systemic symptoms should still prompt review. In this vignette, "Explain that yellow-brown urine discolouration can occur and to seek help if unwell" is the safest single best answer. The other options are less appropriate because they miss the key clinical risk, conflict with UK medicines guidance, or delay needed review.

Reference: BNF; NICE CKS