Breakthrough Bleeding in OC Switchers
35 µg EE OC vs. Two 20 µg EE OCs
Text Box: Bleeding Index
35 µg EE
(Ortho
Tri-Cyclen)
20 µg EE
(Alesse and
 Mircette)
No significant differences
Adapted from Rosenberg MJ et al. Contraception. 1999;60:321-329.