A Study to Evaluate Inhibition of Ovulation of Two Oral Estrogen/Progestogen Regimens in Healthy, Young Females Over a Period of 3 Treatment Cycles

A Double-blind, Randomized, Uncontrolled Study to Evaluate Inhibition of Ovulation of Two Oral Estradiol / Drospirenone Regimens in Healthy Young Female Volunteers Over a Period of 3 Treatment Cycles

Investigation of a new pill containing an estrogen and a progestin in order to monitor the inhibition of the ovulation in young healthy females over 3 treatment cycles

Inclusion Criteria:

• Healthy female volunteers,
• Age 18 - 35 years

Exclusion Criteria:

• Contraindications for use of a combined (estrogen/progestogen) contraceptive (e.g. history of venous/arterial thromboembolic disease)
• Regular intake of medication
• Clinically relevant findings (ECG, blood pressure, physical, gynecological examination, laboratory examination)
• Anovulatory pre-treatment cycle