Drug interactions
Amlodipine-hydrochlorothiazide-valsartan + Dexamethasone
Severity: Moderate
Amlodipine-hydrochlorothiazide-valsartan and Dexamethasone: 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
Dexamethasone and hydrochlorothiazide both promote potassium loss, so combined use can cause hypokalemia. Dexamethasone may also induce CYP3A4 slightly and reduce amlodipine exposure, and its sodium retention and fluid effects can blunt blood pressure control.
What this interaction means in plain words
Amlodipine-hydrochlorothiazide-valsartan and Dexamethasone 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.
Amlodipine-hydrochlorothiazide-valsartan belongs to Cardiovascular; Dexamethasone belongs to Endocrine.
Why it happens
Additive renal potassium wasting from thiazide and glucocorticoid activity, plus weak CYP3A4 induction by dexamethasone and glucocorticoid-related fluid retention.
What to do
Monitor serum potassium and magnesium during prolonged or high-dose dexamethasone therapy and replace as needed. Check blood pressure and adjust antihypertensive therapy if control worsens.
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
Other interactions of Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Frequently asked questions
Can I take Amlodipine-hydrochlorothiazide-valsartan with Dexamethasone?
MediHelp rates the interaction as moderate. Amlodipine-hydrochlorothiazide-valsartan and Dexamethasone 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. Dexamethasone and hydrochlorothiazide both promote potassium loss, so combined use can cause hypokalemia. Dexamethasone may also induce CYP3A4 slightly and reduce amlodipine exposure, and its sodium retention and fluid effects can blunt blood pressure control.
How serious is the interaction between Amlodipine-hydrochlorothiazide-valsartan and Dexamethasone?
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 magnesium during prolonged or high-dose dexamethasone therapy and replace as needed. Check blood pressure and adjust antihypertensive therapy if control worsens.
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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