Drug interactions
Carbinoxamine + Topiramate
Severity: Moderate
Carbinoxamine 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
Carbinoxamine is a sedating first-generation antihistamine and may add to the drowsiness and cognitive slowing caused by topiramate. The combination can impair alertness and psychomotor performance.
What this interaction means in plain words
Carbinoxamine 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.
Carbinoxamine belongs to Respiratory; Topiramate belongs to Central Nervous System.
Why it happens
Additive CNS depression from histamine H1 blockade with central effects plus topiramate.
What to do
Counsel patients about sedation and avoid driving until the response is known. Consider a non-sedating antihistamine if antihistamine therapy is needed long term.
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 Carbinoxamine 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
Other interactions of Carbinoxamine
- Alprazolam + Carbinoxamine Moderate
- Amisulpride + Carbinoxamine Moderate
- Amitriptyline + Carbinoxamine Moderate
- Amobarbital + Carbinoxamine Moderate
- Asenapine + Carbinoxamine Moderate
- Azelastine-fluticasone + Carbinoxamine Moderate
Frequently asked questions
Can I take Carbinoxamine with Topiramate?
MediHelp rates the interaction as moderate. Carbinoxamine 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. Carbinoxamine is a sedating first-generation antihistamine and may add to the drowsiness and cognitive slowing caused by topiramate. The combination can impair alertness and psychomotor performance.
How serious is the interaction between Carbinoxamine 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: Counsel patients about sedation and avoid driving until the response is known. Consider a non-sedating antihistamine if antihistamine therapy is needed long term.
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.
