Drug interactions
Glipizide-metformin + Topiramate
Severity: Moderate
Glipizide-metformin 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 non-anion gap metabolic acidosis, and metformin carries a risk of lactic acidosis. Together they may increase acidosis risk, and topiramate may modestly raise metformin exposure.
What this interaction means in plain words
Glipizide-metformin 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.
Glipizide-metformin belongs to Endocrine; Topiramate belongs to Central Nervous System.
Why it happens
Topiramate inhibits carbonic anhydrase, lowering serum bicarbonate, which adds to metformin-associated acid-base disturbance.
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 Glipizide-metformin
Other interactions of Topiramate
Frequently asked questions
Can I take Glipizide-metformin with Topiramate?
MediHelp rates the interaction as moderate. Glipizide-metformin 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 non-anion gap metabolic acidosis, and metformin carries a risk of lactic acidosis. Together they may increase acidosis risk, and topiramate may modestly raise metformin exposure.
How serious is the interaction between Glipizide-metformin 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 Glipizide-metformin?
MediHelp also lists interactions of Glipizide-metformin with, for example, Contrast media, Diatrizoate meglumine / diatrizoate, Diatrizoate. The full list is on the Glipizide-metformin page.
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