Drug interactions
Betaxolol + Telmisartan
Severity: Moderate
Betaxolol and Telmisartan: moderate 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
Betaxolol and telmisartan together give additive blood pressure reduction, and hypotension may occur at initiation or with volume depletion. Both can raise serum potassium to a small degree.
What this interaction means in plain words
Betaxolol and Telmisartan can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Betaxolol belongs to Cardiovascular; Telmisartan belongs to Cardiovascular.
Why it happens
Additive antihypertensive effects, with angiotensin receptor blockade reducing aldosterone and beta-blockade impairing cellular potassium uptake.
What to do
Monitor blood pressure and serum potassium, particularly in renal impairment. Telmisartan should be avoided in pregnancy.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Betaxolol
- Acebutolol + Betaxolol Major
- Aldesleukin + Betaxolol Major
- Amifostine + Betaxolol Major
- Amiodarone + Betaxolol Major
- Atenolol-chlorthalidone + Betaxolol Major
- Atenolol + Betaxolol Major
Other interactions of Telmisartan
- Aliskiren + Telmisartan Contraindicated
- Sparsentan + Telmisartan Contraindicated
- Amifostine + Telmisartan Major
- Amiloride + Telmisartan Major
- Amlodipine-benazepril + Telmisartan Major
- Amlodipine-hydrochlorothiazide-valsartan + Telmisartan Major
Frequently asked questions
Can I take Betaxolol with Telmisartan?
MediHelp rates the interaction as moderate. Betaxolol and Telmisartan can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Betaxolol and telmisartan together give additive blood pressure reduction, and hypotension may occur at initiation or with volume depletion. Both can raise serum potassium to a small degree.
How serious is the interaction between Betaxolol and Telmisartan?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure and serum potassium, particularly in renal impairment. Telmisartan should be avoided in pregnancy.
What other medicines interact with Betaxolol?
MediHelp also lists interactions of Betaxolol with, for example, Acebutolol, Aldesleukin, Amifostine. The full list is on the Betaxolol page.
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