Esfulvin Griseofulvin Desogestrel
ModerateGriseofulvin can make Desogestrel work less well, as can hydantoins, barbiturates, primidone, carbamazepine, rifampicin, oxcarbazepine, rifabutin, felbamate, ritonavir and St John's Wort products.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.