Drug interactions
Amlodipine-valsartan + Elvitegravir / cobicistat / emtricitabine / tenofovir df
Severity: Moderate
Amlodipine-valsartan and Elvitegravir / cobicistat / emtricitabine / tenofovir df: 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 strongly inhibits CYP3A4, which can raise amlodipine exposure and cause excessive vasodilation, hypotension and peripheral edema. This is a manageable interaction rather than an absolute contraindication, as amlodipine is not among the drugs that are labeled as contraindicated with cobicistat.
What this interaction means in plain words
Amlodipine-valsartan and Elvitegravir / cobicistat / emtricitabine / tenofovir df 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.
Why it happens
Cobicistat inhibits CYP3A4-mediated metabolism of amlodipine, increasing its plasma concentrations.
What to do
Monitor blood pressure and edema and consider a lower amlodipine starting dose, with titration to response. Reassess if symptoms of hypotension appear.
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-valsartan
- Aliskiren + Amlodipine-valsartan Contraindicated
- Amlodipine-valsartan + Sparsentan Contraindicated
- Aldesleukin + Amlodipine-valsartan Major
- Amifostine + Amlodipine-valsartan Major
- Amiloride + Amlodipine-valsartan Major
- Amlodipine-valsartan + Benazepril Major
Frequently asked questions
Can I take Amlodipine-valsartan with Elvitegravir / cobicistat / emtricitabine / tenofovir df?
MediHelp rates the interaction as moderate. Amlodipine-valsartan and Elvitegravir / cobicistat / emtricitabine / tenofovir df 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 strongly inhibits CYP3A4, which can raise amlodipine exposure and cause excessive vasodilation, hypotension and peripheral edema. This is a manageable interaction rather than an absolute contraindication, as amlodipine is not among the drugs that are labeled as contraindicated with cobicistat.
How serious is the interaction between Amlodipine-valsartan and Elvitegravir / cobicistat / emtricitabine / tenofovir df?
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 a lower amlodipine starting dose, with titration to response. Reassess if symptoms of hypotension appear.
What other medicines interact with Amlodipine-valsartan?
MediHelp also lists interactions of Amlodipine-valsartan with, for example, Aliskiren, Sparsentan, Aldesleukin. The full list is on the Amlodipine-valsartan page.
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