A pharmacokinetic study with a low-dose oral contraceptive containing 20 μg ethinylestradiol plus 100 μg levonorgestrel

Bioavailability of orally administered sex steroids used in oral contraception and hormone replacement therapy

1996 • 109 citations

The pharmacokinetics of levonorgestrel and ethynylestradiol in women — Studies with ovran and ovranette

1981 • 101 citations

Investigations of pharmacokinetics of levonorgestrel to specific consideration of a possible first-pass effect in women

1978 • 88 citations

Distribution and percentages of non-protein bound contraceptive steroids in human serum

1982 • 79 citations

Levonorgestrel

1995 • 78 citations

Inhibition of ovulation by an oral contraceptive containing 100 μg levonorgestrel in combination with 20 μg ethinylestradiol

1996 • 74 citations

A review of ‘once-a-month's combined injectable contraceptives

1994 • 59 citations

A multicenter, uncontrolled clinical investigation of the contraceptive efficacy, cycle control, and safety of a new low dose oral contraceptive containing 20 μg ethinyl estradiol and 100 μg levonorgestrel over six treatment cycles

1997 • 53 citations

Pharmacokinetics of levonorgestrel and ethinylestradiol in 9 women who received a low-dose oral contraceptive over a treatment period of 3 months and, after a wash-out phase, a single oral administration of the same contraceptive formulation

1992 • 53 citations

A three-year clinical investigation into efficacy, cycle control and tolerability of a new low-dose monophasic oral contraceptive containing gestodene

1996 • 50 citations

Pharmacokinetics of levonorgestrel and ethinylestradiol in 14 women during three months of treatment with a tri-step combination oral contraceptive: Serum protein binding of levonorgestrel and influence of treatment on free and total testosterone levels in the serum

1994 • 48 citations

Large observational trial of a new low-dose oral contraceptive containing 20 μg ethinylestradiol and 100 μg levonorgestrel (Miranova^r`) in Germany

1999 • 25 citations

Radioimmunological analysis of ethinylestradiol in human serum. Validation of the method and comparison with a gas chromatographic/mass spectrometric assay.

1993 • 18 citations

The relative bioavailability of levonorgestrel and ethinyl estradiol administered as a low-dose combination oral contraceptive

1986 • 14 citations

Influence of changes in the concentration of sex hormone-binding globulin in human serum on the protein binding of the contraceptive steroids levonorgestrel, 3-keto-desogestrel and gestodene

1994 • 13 citations

The relative bioavailability of levonorgestrel and ethinylestradiol when administered in tablet and capsule form

1987 • 10 citations