Drug interactions
Amlodipine-atorvastatin + Atazanavir
Severity: Major
Amlodipine-atorvastatin and Atazanavir: 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
Atazanavir inhibits CYP3A4 and raises amlodipine exposure, and boosted regimens with ritonavir or cobicistat also raise atorvastatin exposure. This increases the risk of hypotension, edema and statin myopathy.
What this interaction means in plain words
Amlodipine-atorvastatin and Atazanavir 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; Atazanavir belongs to Anti Virals.
Why it happens
Inhibition of CYP3A4 (and OATP with boosters) reduces clearance of amlodipine and atorvastatin.
What to do
Use a reduced amlodipine dose, with separate agents, and monitor blood pressure and ECG for PR prolongation. Keep atorvastatin at the lowest effective dose and watch for muscle symptoms.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Amlodipine-atorvastatin and Atazanavir, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Amlodipine-atorvastatin
Other interactions of Atazanavir
- Alfuzosin + Atazanavir Contraindicated
- Atazanavir + Avanafil Contraindicated
- Atazanavir + Dronedarone Contraindicated
- Atazanavir + Eletriptan Contraindicated
- Atazanavir + Eplerenone Contraindicated
- Atazanavir + Ergotamine Contraindicated
Frequently asked questions
Can I take Amlodipine-atorvastatin with Atazanavir?
MediHelp rates the interaction as major. Amlodipine-atorvastatin and Atazanavir 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. Atazanavir inhibits CYP3A4 and raises amlodipine exposure, and boosted regimens with ritonavir or cobicistat also raise atorvastatin exposure. This increases the risk of hypotension, edema and statin myopathy.
How serious is the interaction between Amlodipine-atorvastatin and Atazanavir?
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 a reduced amlodipine dose, with separate agents, and monitor blood pressure and ECG for PR prolongation. Keep atorvastatin at the lowest effective dose and watch for muscle symptoms.
What other medicines interact with Amlodipine-atorvastatin?
MediHelp also lists interactions of Amlodipine-atorvastatin with, for example, Amifostine, Apalutamide, Clarithromycin. The full list is on the Amlodipine-atorvastatin page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
