Drug interactions
Pholcodine + Topiramate
Severity: Moderate
Pholcodine and Topiramate: 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
Topiramate and pholcodine, an opioid antitussive, can both cause drowsiness and impaired concentration. Taken together, central nervous system depression may be more pronounced, affecting driving and other tasks needing alertness.
What this interaction means in plain words
Pholcodine and Topiramate 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 central nervous system depressant effects.
What to do
Warn the patient about increased drowsiness and advise against driving or operating machinery until the response is known. Use the lowest effective pholcodine dose and for the shortest time.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Pholcodine and Topiramate, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Topiramate
Frequently asked questions
Can I take Pholcodine with Topiramate?
MediHelp rates the interaction as moderate. Pholcodine and Topiramate 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. Topiramate and pholcodine, an opioid antitussive, can both cause drowsiness and impaired concentration. Taken together, central nervous system depression may be more pronounced, affecting driving and other tasks needing alertness.
How serious is the interaction between Pholcodine and Topiramate?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Warn the patient about increased drowsiness and advise against driving or operating machinery until the response is known. Use the lowest effective pholcodine dose and for the shortest time.
What other medicines interact with Topiramate?
MediHelp also lists interactions of Topiramate with, for example, Benzhydrocodone / acetaminophen, Buprenorphine long-acting, Buprenorphine subdermal implant. The full list is on the Topiramate page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
