Drug interactions
Mefenamic acid + Trazodone
Severity: Moderate
Mefenamic acid and Trazodone: 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
Trazodone has serotonergic activity that can impair platelet function, and combined with an NSAID it may increase the risk of gastrointestinal bleeding. The effect is likely smaller than with SSRIs.
What this interaction means in plain words
Mefenamic acid and Trazodone 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; Trazodone belongs to Central Nervous System.
Why it happens
Inhibition of platelet serotonin uptake adds to NSAID-induced platelet inhibition and gastric mucosal injury.
What to do
Monitor for signs of GI bleeding and consider gastroprotection in older or high-risk patients. Use the lowest NSAID dose for the shortest time.
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 Trazodone
- Arsenic trioxide + Trazodone Contraindicated
- Ibutilide + Trazodone Contraindicated
- Isocarboxazid + Trazodone Contraindicated
- Levoketoconazole + Trazodone Contraindicated
- Methylene blue + Trazodone Contraindicated
- Phenelzine + Trazodone Contraindicated
Frequently asked questions
Can I take Mefenamic acid with Trazodone?
MediHelp rates the interaction as moderate. Mefenamic acid and Trazodone 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. Trazodone has serotonergic activity that can impair platelet function, and combined with an NSAID it may increase the risk of gastrointestinal bleeding. The effect is likely smaller than with SSRIs.
How serious is the interaction between Mefenamic acid and Trazodone?
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 for signs of GI bleeding and consider gastroprotection in older or high-risk patients. Use the lowest NSAID dose for the shortest time.
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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