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Drug interactions

Dalfampridine + Glyburide-metformin

Severity: Moderate

Dalfampridine and Glyburide-metformin: 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

Both metformin and dalfampridine are eliminated through renal tubular secretion by OCT2. Competition could raise exposure of either drug, and higher dalfampridine levels increase seizure risk, particularly in renal impairment.

What this interaction means in plain words

Dalfampridine and Glyburide-metformin 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.

Dalfampridine belongs to Central Nervous System; Glyburide-metformin belongs to Endocrine.

Evidence level: Low

Why it happens

Competition for renal tubular secretion via OCT2 may reduce clearance of both drugs.

What to do

Check renal function before and during combined use. Watch for seizures or neurologic effects and for metformin adverse effects such as gastrointestinal symptoms.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Dalfampridine with Glyburide-metformin?

MediHelp rates the interaction as moderate. Dalfampridine and Glyburide-metformin 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. Both metformin and dalfampridine are eliminated through renal tubular secretion by OCT2. Competition could raise exposure of either drug, and higher dalfampridine levels increase seizure risk, particularly in renal impairment.

How serious is the interaction between Dalfampridine and Glyburide-metformin?

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 renal function before and during combined use. Watch for seizures or neurologic effects and for metformin adverse effects such as gastrointestinal symptoms.

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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