Drug interactions
Amlodipine-atorvastatin + Ritonavir
Severity: Major
Amlodipine-atorvastatin and Ritonavir: major 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
Ritonavir is a strong CYP3A4 inhibitor and raises amlodipine and atorvastatin exposure. This increases the risk of hypotension, edema and statin-induced myopathy or rhabdomyolysis.
What this interaction means in plain words
Amlodipine-atorvastatin and Ritonavir can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Amlodipine-atorvastatin belongs to Cardiovascular; Ritonavir belongs to Anti Virals.
Why it happens
Potent CYP3A4 inhibition reduces metabolism of amlodipine and atorvastatin.
What to do
Use the lowest effective atorvastatin dose within labeled limits, or choose an alternative statin. Monitor blood pressure and edema, and reduce the amlodipine dose if needed.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Amlodipine-atorvastatin
Other interactions of Ritonavir
- Alfuzosin + Ritonavir Contraindicated
- Amiodarone + Ritonavir Contraindicated
- Avanafil + Ritonavir Contraindicated
- Colchicine + Ritonavir Contraindicated
- Dronedarone + Ritonavir Contraindicated
- Eletriptan + Ritonavir Contraindicated
Frequently asked questions
Can I take Amlodipine-atorvastatin with Ritonavir?
MediHelp rates the interaction as major. Amlodipine-atorvastatin and Ritonavir can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Ritonavir is a strong CYP3A4 inhibitor and raises amlodipine and atorvastatin exposure. This increases the risk of hypotension, edema and statin-induced myopathy or rhabdomyolysis.
How serious is the interaction between Amlodipine-atorvastatin and Ritonavir?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the lowest effective atorvastatin dose within labeled limits, or choose an alternative statin. Monitor blood pressure and edema, and reduce the amlodipine dose if needed.
What other medicines interact with Amlodipine-atorvastatin?
MediHelp also lists interactions of Amlodipine-atorvastatin with, for example, Amifostine, Apalutamide, Atazanavir. The full list is on the Amlodipine-atorvastatin page.
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