Drug interactions
Amiloride + Methyclothiazide
Severity: Minor
Amiloride and Methyclothiazide: 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
Amiloride is commonly paired with thiazide diuretics to offset potassium loss and improve blood pressure control. Their potassium effects oppose each other, but hyponatremia, volume depletion or hyperkalemia can occur, particularly with renal impairment.
What this interaction means in plain words
Amiloride and Methyclothiazide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Methyclothiazide blocks the distal sodium-chloride cotransporter and increases potassium excretion, while amiloride blocks ENaC and conserves potassium.
What to do
Check serum potassium, sodium and renal function periodically, particularly after dose changes.
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?
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Other interactions of Amiloride
- Amiloride + Eplerenone Contraindicated
- Amiloride + Spironolactone Contraindicated
- Amiloride + Triamterene Contraindicated
- Aceclofenac + Amiloride Major
- Acemetacin + Amiloride Major
- Amiloride + Amlodipine-benazepril Major
Frequently asked questions
Can I take Amiloride with Methyclothiazide?
MediHelp rates the interaction as minor. Amiloride and Methyclothiazide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Amiloride is commonly paired with thiazide diuretics to offset potassium loss and improve blood pressure control. Their potassium effects oppose each other, but hyponatremia, volume depletion or hyperkalemia can occur, particularly with renal impairment.
How serious is the interaction between Amiloride and Methyclothiazide?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check serum potassium, sodium and renal function periodically, particularly after dose changes.
What other medicines interact with Amiloride?
MediHelp also lists interactions of Amiloride with, for example, Eplerenone, Spironolactone, Triamterene. The full list is on the Amiloride page.
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