A Multicenter Study to Evaluate the Safety of Seasonique, an Oral Contraceptive.

This study is being conducted to evaluate the safety of an extended-regimen oral contraceptive, with ethinyl estradiol supplementation during the usual hormone-free week, for up to an additional three consecutive years. This is an extension of the Seasonique Phase 3 clinical trial to evaluate long-term safety. Only patients enrolled in the earlier trial are eligible for participation.