Yasmin 20 Cycle Control - Yasmin 20 Versus Mercilon in Healthy Female Volunteers

Open, Randomized, Parallel Multi-center Comparison of Cycle Control and Safety of the Oral Contraceptive Yasmin 20 in a 24-day Regimen vs. Mercilon for 7 Cycles in 440 Healthy Female Volunteers

The purpose of this study is to compare bleeding pattern of contraceptive Yasmin 20 to a marketed comparator.

Inclusion Criteria:

• Healthy female volunteer aged 18-35,
• Smokers 18-30

Exclusion Criteria:

• Contraindications for using hormonal contraceptives