Drug interactions
Fentanyl transdermal + Levocetirizine
Severity: Moderate
Fentanyl transdermal and Levocetirizine: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Transdermal fentanyl has prolonged opioid effects, and levocetirizine can add to drowsiness. Combined CNS depression may cause oversedation.
What this interaction means in plain words
Fentanyl transdermal and Levocetirizine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive CNS depression (pharmacodynamic).
What to do
Monitor for sedation and respiratory depression, particularly when starting or titrating either drug.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Levocetirizine
Frequently asked questions
Can I take Fentanyl transdermal with Levocetirizine?
MediHelp rates the interaction as moderate. Fentanyl transdermal and Levocetirizine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Transdermal fentanyl has prolonged opioid effects, and levocetirizine can add to drowsiness. Combined CNS depression may cause oversedation.
How serious is the interaction between Fentanyl transdermal and Levocetirizine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for sedation and respiratory depression, particularly when starting or titrating either drug.
What other medicines interact with Levocetirizine?
MediHelp also lists interactions of Levocetirizine with, for example, Acrivastine, Asenapine transdermal, Avapritinib. The full list is on the Levocetirizine page.
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