TABLE 1

Medications That Decrease OCP Efficacy

Antibiotics
    Rifampin (Rifadin, Rimactane)
Anticonvulsants
    Felbamate (Felbatol)
    Ethosuximide (Zarontin)
    Primidone (Myidone, Mysoline)
    Phenobarbital (Solfoton, Barbita, Luminal)
    Phenytoin (Dilantin, Phenytek)
    Carbamazepine (Tegretol)
    Oxcarbazepine (Trileptal)
    Topiramate (Topamax)
Antidepressants
    St John's wort
Antifungal agents
    Griseofulvin (Fulvicin, Grifulvin, Grisactin, Gris-PEG)
Anti-HIV drugs
    Protease inhibitors
    Nonnucleoside reverse transcriptase inhibitors