Drug interactions
Glyburide-metformin + Procainamide
Severity: Moderate
Glyburide-metformin and Procainamide: 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
Metformin and procainamide are both cationic drugs secreted by renal tubular transporters, so metformin may raise procainamide levels. Higher procainamide exposure can increase arrhythmia and other adverse effects.
What this interaction means in plain words
Glyburide-metformin and Procainamide 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
Competition for renal tubular secretion via OCT2 and MATE transporters reduces procainamide clearance.
What to do
Monitor procainamide and NAPA levels and ECG, and reduce the procainamide dose if levels rise.
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 Glyburide-metformin
Frequently asked questions
Can I take Glyburide-metformin with Procainamide?
MediHelp rates the interaction as moderate. Glyburide-metformin and Procainamide 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 and procainamide are both cationic drugs secreted by renal tubular transporters, so metformin may raise procainamide levels. Higher procainamide exposure can increase arrhythmia and other adverse effects.
How serious is the interaction between Glyburide-metformin and Procainamide?
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 procainamide and NAPA levels and ECG, and reduce the procainamide dose if levels rise.
What other medicines interact with Glyburide-metformin?
MediHelp also lists interactions of Glyburide-metformin with, for example, Bosentan, Cholic acid, Clarithromycin. The full list is on the Glyburide-metformin page.
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