Drug interactions
Formoterol + Telmisartan-amlodipine
Severity: Minor
Formoterol 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
Formoterol can lower serum potassium and cause tachycardia, and with the blood pressure effects of the antihypertensive this may matter in cardiovascular disease. Telmisartan tends to raise potassium, partly offsetting the effect.
What this interaction means in plain words
Formoterol 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.
Formoterol belongs to Respiratory; Telmisartan-amlodipine belongs to Cardiovascular.
Why it happens
Beta-2 stimulation drives potassium into cells, while ARB therapy reduces potassium excretion.
What to do
Monitor potassium in patients on high doses of formoterol or with other risk factors for hypokalemia. No routine adjustment is needed.
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
Other interactions of Formoterol
- Adagrasib + Formoterol Major
- Amiodarone + Formoterol Major
- Amisulpride + Formoterol Major
- Amitriptyline + Formoterol Major
- Amoxapine + Formoterol Major
- Arformoterol + Formoterol Major
Frequently asked questions
Can I take Formoterol with Telmisartan-amlodipine?
MediHelp rates the interaction as minor. Formoterol 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. Formoterol can lower serum potassium and cause tachycardia, and with the blood pressure effects of the antihypertensive this may matter in cardiovascular disease. Telmisartan tends to raise potassium, partly offsetting the effect.
How serious is the interaction between Formoterol 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 potassium in patients on high doses of formoterol or with other risk factors for hypokalemia. No routine adjustment is needed.
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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