Drug interactions
Biotin + Primidone
Severity: Minor
Biotin and Primidone: minor 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
Long-term primidone therapy, which is partly metabolized to phenobarbital, has been associated with lower biotin status. The clinical significance is uncertain, but deficiency could contribute to skin, hair or neurological symptoms with prolonged use.
What this interaction means in plain words
Biotin and Primidone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Biotin belongs to Gastrointestinal Tract; Primidone belongs to Central Nervous System.
Why it happens
Enzyme-inducing anticonvulsants may increase biotin catabolism and possibly reduce its absorption; the exact mechanism is not firmly established.
What to do
No routine action is needed; consider biotin supplementation if deficiency signs develop during chronic therapy. Remember that supplemental biotin can interfere with some immunoassays.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Biotin
- Biotin + Levothyroxine Moderate
- Azithromycin + Biotin Minor
- Biotin + Carbamazepine Minor
- Biotin + Cefalexin Minor
- Biotin + Erythromycin base Minor
- Biotin + Erythromycin ethylsuccinate Minor
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 Biotin with Primidone?
MediHelp rates the interaction as minor. Biotin and Primidone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Long-term primidone therapy, which is partly metabolized to phenobarbital, has been associated with lower biotin status. The clinical significance is uncertain, but deficiency could contribute to skin, hair or neurological symptoms with prolonged use.
How serious is the interaction between Biotin and Primidone?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine action is needed; consider biotin supplementation if deficiency signs develop during chronic therapy. Remember that supplemental biotin can interfere with some immunoassays.
What other medicines interact with Biotin?
MediHelp also lists interactions of Biotin with, for example, Levothyroxine, Azithromycin, Carbamazepine. The full list is on the Biotin page.
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