Drug interactions
Atazanavir + Bromocriptine
Severity: Major
Atazanavir and Bromocriptine: 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, which metabolizes bromocriptine, so bromocriptine concentrations may rise. This can cause nausea, hypotension, headache and other dopaminergic toxicity.
What this interaction means in plain words
Atazanavir and Bromocriptine 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 belongs to Anti Virals; Bromocriptine belongs to Central Nervous System.
Why it happens
Inhibition of CYP3A4-mediated bromocriptine metabolism by atazanavir, which reduces clearance.
What to do
Start bromocriptine at a low dose and titrate cautiously, or choose an alternative dopamine agonist. Monitor blood pressure and for dopaminergic adverse effects.
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 Bromocriptine
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 Atazanavir with Bromocriptine?
MediHelp rates the interaction as major. Atazanavir and Bromocriptine 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, which metabolizes bromocriptine, so bromocriptine concentrations may rise. This can cause nausea, hypotension, headache and other dopaminergic toxicity.
How serious is the interaction between Atazanavir and Bromocriptine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Start bromocriptine at a low dose and titrate cautiously, or choose an alternative dopamine agonist. Monitor blood pressure and for dopaminergic adverse effects.
What other medicines interact with Bromocriptine?
MediHelp also lists interactions of Bromocriptine with, for example, Amisulpride, Cobicistat, Darunavir. The full list is on the Bromocriptine page.
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