skip to main content

Opioid heat exposure patch — GPhC CRA MCQ

Instant feedback + full explanation. One question, done properly.

ModerateAdverse Drug Reactions and Drug SafetyOpioid heat exposure patchGPhC CRA

A patient using a fentanyl patch asks whether a heat pad can be applied over the patch for back pain. He has felt more sleepy in hot weather. What would you advise the patient?

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

Reveal the answer and explanation

Correct answer: A — Avoid external heat over the patch because absorption may increase

Heat can increase absorption from fentanyl patches and raise the risk of opioid toxicity. Drowsiness may be a warning sign and should be assessed, especially if increasing. Patches should not be cut unless the specific product permits it, which most do not.

Reference: BNF