Women were first introduced to the birth control pill during the 1960s. Since then it has become the most popular form of contraception. Oral contraceptives are made with synthetic hormones that imitate the way a woman’s real hormones (progestin and estrogen) work.

The synthetic hormones prevent women from ovulating. Ovulation is the time of the month when the female body releases eggs that can be fertilized by sperm. The artificial hormones trick the body by making it think it is already pregnant, so it will not release any eggs. This is why oral contraceptives like Ortho Tri-Cyclen are so effective.
more »