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Citalopram QT risk — GPhC CRA MCQ

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HardCNS TherapeuticsCitalopram QT riskGPhC CRA

A 74-year-old woman is prescribed citalopram 40 mg daily. She also takes amiodarone and has a history of prolonged QT interval. The pharmacy system generates an alert. What is the most important interaction to flag?

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Correct answer: D — Citalopram dose and QT-prolonging co-medication increase arrhythmia risk

Citalopram can prolong the QT interval, with dose limits in older adults and caution with other QT-prolonging medicines. Amiodarone and previous QT prolongation make this prescription clinically concerning. The prescriber should be contacted before supply.

Reference: BNF