Drug interactions
Ephedrine + Triamterene
Severity: Minor
Ephedrine and Triamterene: minor 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
Ephedrine can shift potassium into cells, mildly lowering serum potassium, while triamterene retains potassium. The effects largely oppose each other and are rarely important. Ephedrine may also raise blood pressure and counter antihypertensive therapy.
What this interaction means in plain words
Ephedrine and Triamterene have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Ephedrine belongs to Cardiovascular; Triamterene belongs to Cardiovascular.
Why it happens
Beta-adrenergic stimulation promotes cellular potassium uptake, opposing triamterene's renal potassium retention.
What to do
No routine action; monitor blood pressure and potassium if ephedrine is used repeatedly.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Ephedrine and Triamterene, 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 7 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
Other interactions of Ephedrine
- Ephedrine + Isocarboxazid Contraindicated
- Ephedrine + Phenelzine Contraindicated
- Ephedrine + Procarbazine Contraindicated
- Ephedrine + Rasagiline Contraindicated
- Ephedrine + Selegiline Contraindicated
- Ephedrine + Tranylcypromine Contraindicated
Frequently asked questions
Can I take Ephedrine with Triamterene?
MediHelp rates the interaction as minor. Ephedrine and Triamterene have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Ephedrine can shift potassium into cells, mildly lowering serum potassium, while triamterene retains potassium. The effects largely oppose each other and are rarely important. Ephedrine may also raise blood pressure and counter antihypertensive therapy.
How serious is the interaction between Ephedrine and Triamterene?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine action; monitor blood pressure and potassium if ephedrine is used repeatedly.
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.
