Drug interactions
Dalfampridine + Metformin
Severity: Moderate
Dalfampridine and 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 drugs are cleared through renal tubular secretion involving OCT2, so they may compete and raise each other's exposure. Higher dalfampridine levels increase seizure risk, and higher metformin levels could raise the risk of lactic acidosis, mainly in renal impairment.
What this interaction means in plain words
Dalfampridine and 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; Metformin belongs to Endocrine.
Why it happens
Competition for renal tubular secretion via organic cation transporter 2 (OCT2).
What to do
Check renal function before and during combined use and monitor for dalfampridine adverse effects such as seizures and for metformin intolerance. Avoid dalfampridine with moderate or severe renal impairment.
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 Dalfampridine
Other interactions of Metformin
Frequently asked questions
Can I take Dalfampridine with Metformin?
MediHelp rates the interaction as moderate. Dalfampridine and 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 drugs are cleared through renal tubular secretion involving OCT2, so they may compete and raise each other's exposure. Higher dalfampridine levels increase seizure risk, and higher metformin levels could raise the risk of lactic acidosis, mainly in renal impairment.
How serious is the interaction between Dalfampridine and 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 and monitor for dalfampridine adverse effects such as seizures and for metformin intolerance. Avoid dalfampridine with moderate or severe renal impairment.
What other medicines interact with Dalfampridine?
MediHelp also lists interactions of Dalfampridine with, for example, Trilaciclib, Alogliptin-metformin, Canagliflozin-metformin. The full list is on the Dalfampridine page.
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