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Drug interactions

Amlodipine-hydrochlorothiazide-valsartan + Citalopram

Severity: Moderate

Amlodipine-hydrochlorothiazide-valsartan and Citalopram: moderate interaction.

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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

Both thiazide diuretics and SSRIs such as citalopram can cause hyponatremia, and the risk is greatest in older adults and women. Thiazide-induced hypokalemia and hypomagnesemia may also add to citalopram's QT-prolonging effect.

What this interaction means in plain words

Amlodipine-hydrochlorothiazide-valsartan and Citalopram 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; Citalopram belongs to Central Nervous System.

Evidence level: Moderate

Why it happens

Additive effects on sodium homeostasis (thiazide natriuresis plus SSRI-related SIADH), with electrolyte disturbance increasing QT risk.

What to do

Check serum sodium, potassium and magnesium at baseline and within the first weeks of therapy, and replace deficits. Watch for confusion, falls or palpitations, and consider an ECG in high-risk patients.

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 Citalopram?

MediHelp rates the interaction as moderate. Amlodipine-hydrochlorothiazide-valsartan and Citalopram 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. Both thiazide diuretics and SSRIs such as citalopram can cause hyponatremia, and the risk is greatest in older adults and women. Thiazide-induced hypokalemia and hypomagnesemia may also add to citalopram's QT-prolonging effect.

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

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check serum sodium, potassium and magnesium at baseline and within the first weeks of therapy, and replace deficits. Watch for confusion, falls or palpitations, and consider an ECG in high-risk patients.

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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