Drug interactions
Mefenamic acid + Metoprolol
Severity: Moderate
Mefenamic acid and Metoprolol: 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
NSAIDs can blunt the antihypertensive effect of metoprolol, particularly with regular use over more than a few days. This may reduce blood pressure control.
What this interaction means in plain words
Mefenamic acid and Metoprolol 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.
Mefenamic acid belongs to Musculoskeletal; Metoprolol belongs to Cardiovascular.
Why it happens
NSAID inhibition of vasodilatory prostaglandins and sodium and fluid retention counteract beta-blocker blood pressure lowering.
What to do
Monitor blood pressure during prolonged NSAID use and adjust antihypertensive therapy if needed. Prefer paracetamol where suitable.
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 Mefenamic acid
- Ketorolac intranasal + Mefenamic acid Contraindicated
- Ketorolac + Mefenamic acid Contraindicated
- Aceclofenac + Mefenamic acid Major
- Acemetacin + Mefenamic acid Major
- Acetylsalicylic acid + Mefenamic acid Major
- Alteplase + Mefenamic acid Major
Other interactions of Metoprolol
- Metoprolol + Thioridazine Contraindicated
- Amifostine + Metoprolol Major
- Amiodarone + Metoprolol Major
- Atenolol-chlorthalidone + Metoprolol Major
- Atenolol + Metoprolol Major
- Betaxolol + Metoprolol Major
Frequently asked questions
Can I take Mefenamic acid with Metoprolol?
MediHelp rates the interaction as moderate. Mefenamic acid and Metoprolol 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. NSAIDs can blunt the antihypertensive effect of metoprolol, particularly with regular use over more than a few days. This may reduce blood pressure control.
How serious is the interaction between Mefenamic acid and Metoprolol?
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 blood pressure during prolonged NSAID use and adjust antihypertensive therapy if needed. Prefer paracetamol where suitable.
What other medicines interact with Mefenamic acid?
MediHelp also lists interactions of Mefenamic acid with, for example, Ketorolac intranasal, Ketorolac, Aceclofenac. The full list is on the Mefenamic acid page.
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