Skip to content

Drug interactions

Acetylsalicylic acid + Valproic acid

Severity: Moderate

Acetylsalicylic acid and Valproic acid: 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

Aspirin can raise the free fraction of valproic acid and may reduce its clearance, increasing the risk of valproate toxicity.

Pro+ members

Unlock the full page

Create an account and start a Pro+ trial to see why Acetylsalicylic acid and Valproic acid interact, what to do about it, and the sources.

  • Mechanism of action
  • Clinical management
  • Evidence level

Free 14-day trial. No card needed.

Full monographs, dosing and an interaction checker in the MediHelp app

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

Browse A–Z · Drug interactions

Get the app Sign in