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Lithium dehydration — GPhC CRA MCQ

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HardCNS TherapeuticsLithium dehydrationGPhC CRA

A patient taking lithium has vomiting, diarrhoea, tremor and unsteadiness after missing blood tests. What is the most appropriate action?

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

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Correct answer: C — Refer urgently for lithium level, renal function and clinical assessment

Dehydration and toxicity symptoms in lithium treatment require urgent assessment. In this scenario, the pharmacist should prioritise safe supply, appropriate counselling and timely referral or clarification where needed. This is the single best answer because the other options would either delay assessment, ignore a clinically significant risk, or create an unsafe legal or professional outcome.

Reference: BNF