Fentanyl has a low molecular weight and is lipophilic making it suitable for transdermal administration. However, multiple factors appear to lead to interindividual variation in absorption via this route. Here we describe an unusual case where a patient was found to have twelve 100 μg/hour fentanyl patches in situ which she was using as background analgesia.
- drug administration
- transdermal fentanyl
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Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Patient consent for publication Obtained.
Provenance and peer review Not commissioned; internally peer reviewed.
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