Preliminary experience with a new low-oestrogen content combined oral contraceptive

Summary

A new combined oral contraceptive, (‘Restovar’, Organon), consisting of 37.5 μg. ethinyl oestradiol and 0.75 mg. lynestrenol, was taken by 335 women for a total of 4857 cycles. No pregnancies occurred during the study. Satisfactory cycle control with a very low incidence of side-effects was observed. The study proved that with less than 50 μg. of ethinyl oestradiol in the combined formula a high contraceptive efficacy as well as a satisfactory cycle control were obtained.

Key words::

• Lynestrenol
• ethinyl oestradiol
• contraceptives
• oral