Drug interactions

Bromocriptine + Saquinavir

Severity: Major

Bromocriptine and Saquinavir: major interaction.

Last updated 29 Oct 2026 Sources: US FDA label

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

Saquinavir, usually given with ritonavir, inhibits CYP3A4 and may increase bromocriptine concentrations, raising the risk of hypotension and CNS adverse effects.

Bromocriptine

What this interaction means in plain words

Bromocriptine and Saquinavir 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.

Evidence level: Moderate

Why it happens

Inhibition of CYP3A4-mediated bromocriptine metabolism.

What to do

Avoid if feasible; if combined, reduce the bromocriptine dose and monitor blood pressure and neuropsychiatric 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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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References

Bromocriptine mesylate - FDA drug label (DailyMed) - section 7 Drug Interactions (class statement: HIV protease inhibitors; "Caution should therefore be used when co-administering drugs which are strong inhibitors of this enzyme (such as azole antimycotics, HIV protease inhibitors).") — DailyMed (FDA label)

Amisulpride + Bromocriptine Major
Atazanavir + Bromocriptine Major
Bromocriptine + Cobicistat Major
Bromocriptine + Darunavir Major
Bromocriptine + Dihydroergotamine Major
Bromocriptine + Dihydroergotamine intranasal Major

Frequently asked questions

Can I take Bromocriptine with Saquinavir?

MediHelp rates the interaction as major. Bromocriptine and Saquinavir 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. Saquinavir, usually given with ritonavir, inhibits CYP3A4 and may increase bromocriptine concentrations, raising the risk of hypotension and CNS adverse effects.

How serious is the interaction between Bromocriptine and Saquinavir?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid if feasible; if combined, reduce the bromocriptine dose and monitor blood pressure and neuropsychiatric effects.

What other medicines interact with Bromocriptine?

MediHelp also lists interactions of Bromocriptine with, for example, Amisulpride, Atazanavir, Cobicistat. The full list is on the Bromocriptine page.

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