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Drug interactions

Amlodipine-hydrochlorothiazide-valsartan + Carbenoxolone

Severity: Moderate

Amlodipine-hydrochlorothiazide-valsartan and Carbenoxolone: 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

Carbenoxolone has mineralocorticoid-like activity causing sodium retention and potassium loss. With hydrochlorothiazide, hypokalemia is more likely and sodium and fluid retention may reduce blood pressure control. Valsartan only partly offsets potassium loss.

What this interaction means in plain words

Amlodipine-hydrochlorothiazide-valsartan and Carbenoxolone 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

Additive renal potassium wasting from thiazide and carbenoxolone's mineralocorticoid effect, which also opposes antihypertensive therapy.

What to do

Monitor serum potassium and blood pressure, and replace potassium as needed. Avoid the combination in patients with heart disease or on digoxin.

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 Carbenoxolone?

MediHelp rates the interaction as moderate. Amlodipine-hydrochlorothiazide-valsartan and Carbenoxolone 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. Carbenoxolone has mineralocorticoid-like activity causing sodium retention and potassium loss. With hydrochlorothiazide, hypokalemia is more likely and sodium and fluid retention may reduce blood pressure control. Valsartan only partly offsets potassium loss.

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

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 and blood pressure, and replace potassium as needed. Avoid the combination in patients with heart disease or on digoxin.

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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