Drug interactions
Lacosamide + Topiramate
Severity: Minor
Lacosamide and Topiramate: minor 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
Lacosamide slows cardiac conduction, and topiramate is not a classic sodium channel blocker with strong conduction effects. Pharmacokinetic interaction is not clinically significant, so any additive conduction risk is small and mainly theoretical.
What this interaction means in plain words
Lacosamide and Topiramate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Lacosamide belongs to Central Nervous System; Topiramate belongs to Central Nervous System.
Why it happens
Possible weak additive effects on neuronal and cardiac sodium channels; no meaningful pharmacokinetic interaction.
What to do
No dose adjustment is needed; obtain a baseline ECG in patients with known conduction disease or cardiac risk factors before titrating lacosamide.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Lacosamide
- Lacosamide + Zuranolone Major
- Atazanavir + Lacosamide Moderate
- Carbamazepine + Lacosamide Moderate
- Cenobamate + Lacosamide Moderate
- Clarithromycin + Lacosamide Moderate
- Daridorexant + Lacosamide Moderate
Other interactions of Topiramate
Frequently asked questions
Can I take Lacosamide with Topiramate?
MediHelp rates the interaction as minor. Lacosamide and Topiramate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Lacosamide slows cardiac conduction, and topiramate is not a classic sodium channel blocker with strong conduction effects. Pharmacokinetic interaction is not clinically significant, so any additive conduction risk is small and mainly theoretical.
How serious is the interaction between Lacosamide and Topiramate?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose adjustment is needed; obtain a baseline ECG in patients with known conduction disease or cardiac risk factors before titrating lacosamide.
What other medicines interact with Lacosamide?
MediHelp also lists interactions of Lacosamide with, for example, Zuranolone, Atazanavir, Carbamazepine. The full list is on the Lacosamide page.
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