Manufacturer
Pfizer
Contents
Norethisterone
Indication
Contraception.
Instruction
1 tab daily starting on the 1st day of menstrual bleeding.
Drug interaction
Potential loss of contraceptive effect by St. John's wort. Reduced efficacy w/ sedatives, antibiotics & antiepileptics. Increased serum levels of prednisone, prednisolone, cloprednol & other corticosteroids.