Norethindrone Acetate Ethinyl Estradiol And Ferrous Fumarate + Phenytoin Interaction
Majorinteraction on record
Description
Phenytoin increases metabolism of ethinyl estradiol and/or norethindrone, which could result in reduced contraceptive effectiveness.
Mechanism
Increased metabolism of ethinyl estradiol and/or norethindrone
Source: NLP:norethindrone acetate and ethinyl estradiol and ferrous fumarate