Drug interactions
Methyclothiazide + Telmisartan-amlodipine
Severity: Minor
Methyclothiazide and Telmisartan-amlodipine: 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
Methyclothiazide is a thiazide diuretic that lowers blood pressure and potassium, while telmisartan tends to raise potassium. The combination is commonly used and the potassium effects partly offset each other, but blood pressure lowering is additive and volume depletion may occur.
What this interaction means in plain words
Methyclothiazide and Telmisartan-amlodipine 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
Additive antihypertensive effects, with opposing effects on potassium from thiazide kaliuresis and ARB aldosterone suppression.
What to do
Monitor blood pressure, serum potassium, sodium and renal function after starting or adjusting either drug. Reduce doses if symptomatic hypotension occurs.
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 Telmisartan-amlodipine
- Aliskiren + Telmisartan-amlodipine Contraindicated
- Sparsentan + Telmisartan-amlodipine Contraindicated
- Amifostine + Telmisartan-amlodipine Major
- Amiloride + Telmisartan-amlodipine Major
- Benazepril + Telmisartan-amlodipine Major
- Candesartan + Telmisartan-amlodipine Major
Frequently asked questions
Can I take Methyclothiazide with Telmisartan-amlodipine?
MediHelp rates the interaction as minor. Methyclothiazide and Telmisartan-amlodipine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Methyclothiazide is a thiazide diuretic that lowers blood pressure and potassium, while telmisartan tends to raise potassium. The combination is commonly used and the potassium effects partly offset each other, but blood pressure lowering is additive and volume depletion may occur.
How serious is the interaction between Methyclothiazide and Telmisartan-amlodipine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure, serum potassium, sodium and renal function after starting or adjusting either drug. Reduce doses if symptomatic hypotension occurs.
What other medicines interact with Telmisartan-amlodipine?
MediHelp also lists interactions of Telmisartan-amlodipine with, for example, Aliskiren, Sparsentan, Amifostine. The full list is on the Telmisartan-amlodipine page.
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