Taking certain medicines can lower your blood levels of biotin, which could affect your biotin dose needs. Ask a doctor or pharmacist before using biotin with any other medications, especially:
carbamazepine;
phenobarbital;
phenytoin; or
primidone.
This list is not complete. Other drugs may affect biotin, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.
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