Modern pills, known as "low-dose oral contraceptives (OCs)," contain ethinyl estradiol at concentrations of 20-35 µg. The subsequent discovery of deleterious effects of progestin on the lipid ...

Twenty-five years later, the leading British weekly, The Economist, listed the Pill as one of the seven wonders of the modern world. For more than forty years, more people have taken it than any ...

The pill, too, seemed mythic and new, the age-old dream of avoiding unwanted pregnancy brought to you by modern science, stylishly packaged in a carousel that looked like the dial of a Princess phone.

Pills that contain progestin and estrogen are called combined oral contraceptives (COCs). Most forms of modern birth control pills contain lower amounts of estrogen than they did in the past.

Modern pills contain much less oestrogen. Contraceptive injections, implants or skin patches contain slow release progesterone to prevent the maturation and release of eggs.