Investigation of a new low dose oral contraceptive 30 micrograms ethynyl estradiol and 150 micrograms levo norgestrel dextro norgestrel
Bergstein, N.A.M.
Clinical Therapeutics 1(1): 26-32
1977
ISSN/ISBN: 0149-2918 Document Number: 479651
Women (325) completed 3445 cycles of treatment with a combined oral contraceptive containing 30 .mu.g of ethinyl estradiol and 150 .mu.g of levonorgestrel (formerly d-norgestrel). One woman became pregnant due to patient failure. Cycle control was good: spotting, breakthrough bleeding and amenorrhea were reported in 2.7, 0.7 and 0.6% of cycles, respectively. The incidence of estrogen-related adverse effects was low in comparison to that of contraceptives containing 50 .mu.g of estrogen.
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