Drug interactions
Metformin-repaglinide + Topiramate
Severity: Moderate
Metformin-repaglinide 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 can cause hyperchloremic metabolic acidosis by carbonic anhydrase inhibition, which may complicate recognition of metformin-associated lactic acidosis. It also modestly raises metformin exposure.
What this interaction means in plain words
Metformin-repaglinide 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.
Metformin-repaglinide belongs to Endocrine; Topiramate belongs to Central Nervous System.
Why it happens
Carbonic anhydrase inhibition lowers serum bicarbonate, adding to metformin's acidosis risk.
What to do
Check serum bicarbonate at baseline and periodically; reduce or stop metformin or topiramate if persistent acidosis develops.
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 Metformin-repaglinide
Other interactions of Topiramate
Frequently asked questions
Can I take Metformin-repaglinide with Topiramate?
MediHelp rates the interaction as moderate. Metformin-repaglinide 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 can cause hyperchloremic metabolic acidosis by carbonic anhydrase inhibition, which may complicate recognition of metformin-associated lactic acidosis. It also modestly raises metformin exposure.
How serious is the interaction between Metformin-repaglinide 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: Check serum bicarbonate at baseline and periodically; reduce or stop metformin or topiramate if persistent acidosis develops.
What other medicines interact with Metformin-repaglinide?
MediHelp also lists interactions of Metformin-repaglinide with, for example, Gemfibrozil, Apalutamide, Clarithromycin. The full list is on the Metformin-repaglinide page.
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