Does Triamterene Interact with Quinapril?
CDI records a moderate classification for Triamterene and Quinapril. The stored summary is: Potassium-sparing diuretic may increase serum potassium when used with quinapril. Use with caution and monitor serum potassium appropriately. The mechanism involves quinapril can attenuate potassium loss and increase serum potassium. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This record was extracted from drug labeling through openFDA. NIH/NLM RxNorm is used for drug identities. The summary and severity classification are CDI's processed information, not a verbatim source quotation. Product, route, and patient circumstances matter.
- Severity
- Moderate
- Triamterene Class
- Potassium-sparing Diuretic
- Management
- Monitor for effects
- Data Source
- U.S. FDA via OpenFDA
Recorded Mechanism
Quinapril can attenuate potassium loss and increase serum potassium
What To Tell Your Doctor or Pharmacist
If you are taking Triamterene and your doctor is considering prescribing Quinapril (or vice versa), make sure to:
- Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
- Ask whether the benefits of combining these medications outweigh the risks for your specific situation
- Ask what symptoms to watch for that would indicate the interaction is causing problems
- Ask whether any dosage adjustments are needed
- Never stop or change either medication without first consulting your healthcare provider