Drug interactions
Triamterene + Xipamide
Severity: Moderate
Triamterene and Xipamide: 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
Xipamide is a thiazide-like diuretic that causes potassium and magnesium loss, while triamterene is potassium-sparing. Together they give complementary diuresis and the potassium-sparing effect offsets hypokalemia, but fluid and electrolyte shifts, hyponatremia and hypotension can still occur. Hyperkalemia is possible in renal impairment.
What this interaction means in plain words
Triamterene and Xipamide 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
Additive diuretic effect from action at different nephron sites, with opposing effects on potassium handling.
What to do
Monitor serum potassium, sodium and creatinine within the first weeks of combined therapy and periodically thereafter. Reduce doses or stop one agent if electrolyte disturbance or volume depletion develops.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Triamterene and Xipamide, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Triamterene
- Amiloride + Triamterene Contraindicated
- Eplerenone + Triamterene Contraindicated
- Potassium citrate / citric acid + Triamterene Contraindicated
- Potassium citrate + Triamterene Contraindicated
- Spironolactone + Triamterene Contraindicated
- Aceclofenac + Triamterene Major
Frequently asked questions
Can I take Triamterene with Xipamide?
MediHelp rates the interaction as moderate. Triamterene and Xipamide 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. Xipamide is a thiazide-like diuretic that causes potassium and magnesium loss, while triamterene is potassium-sparing. Together they give complementary diuresis and the potassium-sparing effect offsets hypokalemia, but fluid and electrolyte shifts, hyponatremia and hypotension can still occur. Hyperkalemia is possible in renal impairment.
How serious is the interaction between Triamterene and Xipamide?
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, sodium and creatinine within the first weeks of combined therapy and periodically thereafter. Reduce doses or stop one agent if electrolyte disturbance or volume depletion develops.
What other medicines interact with Triamterene?
MediHelp also lists interactions of Triamterene with, for example, Amiloride, Eplerenone, Potassium citrate / citric acid. The full list is on the Triamterene page.
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.
