Drug interactions
Bromocriptine + Primidone
Severity: Moderate
Bromocriptine and Primidone: 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
Primidone is metabolized partly to phenobarbital, which induces CYP3A4 and may reduce bromocriptine exposure. This can weaken the therapeutic response.
What this interaction means in plain words
Bromocriptine and Primidone 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.
Bromocriptine belongs to Central Nervous System; Primidone belongs to Central Nervous System.
Why it happens
Primidone and its phenobarbital metabolite induce CYP3A4, increasing bromocriptine clearance.
What to do
Monitor prolactin or clinical response and raise the bromocriptine dose if control is lost. Readjust if primidone is stopped.
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 Bromocriptine
Other interactions of Primidone
- Lorlatinib + Primidone Contraindicated
- Lurasidone + Primidone Contraindicated
- Primidone + Ranolazine Contraindicated
- Primidone + Sofosbuvir-velpatasvir-voxilaprevir Contraindicated
- Primidone + Voriconazole Contraindicated
- Abiraterone + Primidone Major
Frequently asked questions
Can I take Bromocriptine with Primidone?
MediHelp rates the interaction as moderate. Bromocriptine and Primidone 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. Primidone is metabolized partly to phenobarbital, which induces CYP3A4 and may reduce bromocriptine exposure. This can weaken the therapeutic response.
How serious is the interaction between Bromocriptine and Primidone?
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 prolactin or clinical response and raise the bromocriptine dose if control is lost. Readjust if primidone is stopped.
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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