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Drug interactions

Amlodipine-hydrochlorothiazide-valsartan + Metaproterenol

Severity: Moderate

Amlodipine-hydrochlorothiazide-valsartan and Metaproterenol: 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

Metaproterenol can lower serum potassium, and hydrochlorothiazide adds to this. The resulting hypokalemia may provoke arrhythmias, especially at high beta-agonist doses.

What this interaction means in plain words

Amlodipine-hydrochlorothiazide-valsartan and Metaproterenol 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.

Evidence level: Moderate

Why it happens

Beta-2 stimulation drives potassium into cells while thiazides promote renal potassium loss.

What to do

Monitor serum potassium in patients using frequent or high-dose metaproterenol and replace as needed.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Amlodipine-hydrochlorothiazide-valsartan with Metaproterenol?

MediHelp rates the interaction as moderate. Amlodipine-hydrochlorothiazide-valsartan and Metaproterenol 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. Metaproterenol can lower serum potassium, and hydrochlorothiazide adds to this. The resulting hypokalemia may provoke arrhythmias, especially at high beta-agonist doses.

How serious is the interaction between Amlodipine-hydrochlorothiazide-valsartan and Metaproterenol?

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 serum potassium in patients using frequent or high-dose metaproterenol and replace as needed.

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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