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GTN counselling — GPhC CRA MCQ

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ModerateCardiovascular TherapeuticsGTN counsellingGPhC CRA

A patient presents with a first prescription for glyceryl trinitrate spray for stable angina. He asks how to use it during chest pain. What would you advise the patient?

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

Reveal the answer and explanation

Correct answer: E — Use one or two sprays under the tongue while sitting down

GTN spray is used sublingually and can cause headache, flushing and postural hypotension, so the patient should sit before use. The medicine should not be swallowed because rapid absorption is needed. If pain persists after appropriate repeated dosing, emergency help is required. Heat and moisture are unsuitable storage conditions for medicines.

Reference: BNF