Drug interactions
Mefenamic acid + Sodium sulfate / potassium sulfate / magnesium sulfate
Severity: Moderate
Mefenamic acid and Sodium sulfate / potassium sulfate / magnesium sulfate: 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
Sulfate-based bowel preparations cause fluid and electrolyte changes, while NSAIDs reduce renal blood flow. Using them together increases the risk of kidney injury and electrolyte-related events such as arrhythmias or seizures.
What this interaction means in plain words
Mefenamic acid and Sodium sulfate / potassium sulfate / magnesium sulfate 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.
Why it happens
Preparation-induced volume depletion and electrolyte disturbance compounded by NSAID inhibition of prostaglandin-dependent renal perfusion.
What to do
Hold the NSAID during the preparation period where possible and maintain hydration. Monitor renal function and electrolytes in older or high-risk patients.
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
Frequently asked questions
Can I take Mefenamic acid with Sodium sulfate / potassium sulfate / magnesium sulfate?
MediHelp rates the interaction as moderate. Mefenamic acid and Sodium sulfate / potassium sulfate / magnesium sulfate 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. Sulfate-based bowel preparations cause fluid and electrolyte changes, while NSAIDs reduce renal blood flow. Using them together increases the risk of kidney injury and electrolyte-related events such as arrhythmias or seizures.
How serious is the interaction between Mefenamic acid and Sodium sulfate / potassium sulfate / magnesium sulfate?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Hold the NSAID during the preparation period where possible and maintain hydration. Monitor renal function and electrolytes in older or high-risk patients.
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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