Drug interactions
Amlodipine-hydrochlorothiazide-valsartan + Penbutolol
Severity: Moderate
Amlodipine-hydrochlorothiazide-valsartan and Penbutolol: 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
Combining a beta-blocker with amlodipine, valsartan and hydrochlorothiazide produces additive blood pressure lowering, which can cause hypotension, dizziness or bradycardia. Beta-blockers may also modestly raise potassium, and this adds to the hyperkalemia risk with valsartan.
What this interaction means in plain words
Amlodipine-hydrochlorothiazide-valsartan and Penbutolol 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.
Why it happens
Additive pharmacodynamic antihypertensive effects, with impaired cellular potassium uptake from beta-blockade adding to ARB-related potassium retention.
What to do
Monitor blood pressure and heart rate and titrate doses gradually. Check serum potassium and renal function periodically.
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 Amlodipine-hydrochlorothiazide-valsartan
- Aliskiren + Amlodipine-hydrochlorothiazide-valsartan Contraindicated
- Amlodipine-hydrochlorothiazide-valsartan + Dofetilide Contraindicated
- Amlodipine-hydrochlorothiazide-valsartan + Sparsentan Contraindicated
- Aceclofenac + Amlodipine-hydrochlorothiazide-valsartan Major
- Aldesleukin + Amlodipine-hydrochlorothiazide-valsartan Major
- Amifostine + Amlodipine-hydrochlorothiazide-valsartan Major
Frequently asked questions
Can I take Amlodipine-hydrochlorothiazide-valsartan with Penbutolol?
MediHelp rates the interaction as moderate. Amlodipine-hydrochlorothiazide-valsartan and Penbutolol 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. Combining a beta-blocker with amlodipine, valsartan and hydrochlorothiazide produces additive blood pressure lowering, which can cause hypotension, dizziness or bradycardia. Beta-blockers may also modestly raise potassium, and this adds to the hyperkalemia risk with valsartan.
How serious is the interaction between Amlodipine-hydrochlorothiazide-valsartan and Penbutolol?
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 heart rate and titrate doses gradually. Check serum potassium and renal function periodically.
What other medicines interact with Amlodipine-hydrochlorothiazide-valsartan?
MediHelp also lists interactions of Amlodipine-hydrochlorothiazide-valsartan with, for example, Aliskiren, Dofetilide, Sparsentan. The full list is on the Amlodipine-hydrochlorothiazide-valsartan page.
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