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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 
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 
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