Drug-drug Interaction Study: Influence of Vilaprisan on Pharmacodynamics (PD) and Pharmacokinetics (PK) of a Combined Oral Contraceptive (COC)

Multiple doses of Vilaprisan for 3 cycles of 28 days each and 7 additional doses on the 7 days after cycle 3.

Multiple doses of placebo for 3 cycles of 28 days each and 7 additional doses on the 7 days after cycle 3.

Multiple doses of Microgynon for 3 cycles of 21 days each (day 1-21)

For the treatment cycle 1-3, 7 doses of Microgynon placebo on Day 22-28 per cycle and after 3 treatment cycles 7 additional doses of Microgynon placebo on the 7 days after cycle 3 (day 84 - 91).