Drug interactions
Mefenamic acid + Potassium citrate
Severity: Moderate
Mefenamic acid and Potassium citrate: 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
Mefenamic acid may decrease renal potassium excretion and increase hyperkalemia risk with potassium citrate. Kidney disease heightens the risk.
What this interaction means in plain words
Mefenamic acid and Potassium citrate 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; Potassium citrate belongs to Gastrointestinal Tract.
Why it happens
NSAID prostaglandin inhibition causes reduced renin-aldosterone activity and potassium retention.
What to do
Monitor serum potassium and renal function during co-use. Reduce the supplement or discontinue the NSAID if potassium rises.
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 Potassium citrate
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
Frequently asked questions
Can I take Mefenamic acid with Potassium citrate?
MediHelp rates the interaction as moderate. Mefenamic acid and Potassium citrate 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 may decrease renal potassium excretion and increase hyperkalemia risk with potassium citrate. Kidney disease heightens the risk.
How serious is the interaction between Mefenamic acid and Potassium citrate?
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 serum potassium and renal function during co-use. Reduce the supplement or discontinue the NSAID if potassium rises.
What other medicines interact with Potassium citrate?
MediHelp also lists interactions of Potassium citrate with, for example, Triamterene, Amiloride, Amlodipine-benazepril. The full list is on the Potassium citrate page.
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