| abstract |
Oral form of birth control comprises, as an active compound, 17α-cyanomethyl-17-β-hydroxyester-4,9-dien-3-one (dienogest) in a daily dose equal to or less than 2.0 mg and as another active component 17a -ethynyl estradiol (ethynyl estradiol) at a daily dose of less than 0.03 mg, together with one or more pharmaceutically acceptable carriers. The active ingredient dienogest is present in crystalline form with an average particle size of from 25 to 70 µm. The active ingredient ethynyl oestradiol is introduced in micronized form or as ethanolic solution during the granulation. |