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Drug interactions

Amlodipine-olmesartan-hydrochlorothiazide + Cobicistat

Severity: Moderate

Amlodipine-olmesartan-hydrochlorothiazide and Cobicistat: 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

Cobicistat is a strong CYP3A4 inhibitor and increases amlodipine exposure, which can cause hypotension, peripheral edema and dizziness.

What this interaction means in plain words

Amlodipine-olmesartan-hydrochlorothiazide and Cobicistat 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-olmesartan-hydrochlorothiazide belongs to Cardiovascular; Cobicistat belongs to Miscellaneous.

Evidence level: Moderate

Why it happens

Cobicistat inhibits CYP3A4, reducing amlodipine clearance.

What to do

Monitor blood pressure and edema, and consider reducing the amlodipine dose; the fixed-dose triple combination may need replacing with separate components.

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-olmesartan-hydrochlorothiazide with Cobicistat?

MediHelp rates the interaction as moderate. Amlodipine-olmesartan-hydrochlorothiazide and Cobicistat 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. Cobicistat is a strong CYP3A4 inhibitor and increases amlodipine exposure, which can cause hypotension, peripheral edema and dizziness.

How serious is the interaction between Amlodipine-olmesartan-hydrochlorothiazide and Cobicistat?

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 edema, and consider reducing the amlodipine dose; the fixed-dose triple combination may need replacing with separate components.

What other medicines interact with Amlodipine-olmesartan-hydrochlorothiazide?

MediHelp also lists interactions of Amlodipine-olmesartan-hydrochlorothiazide with, for example, Aliskiren, Dofetilide, Sparsentan. The full list is on the Amlodipine-olmesartan-hydrochlorothiazide page.

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