Hormonal contraception refers to birth control methods that act on the endocrine system. Almost all methods are composed of steroid hormones, although in India one selective estrogen receptor modulator is marketed as a contraceptive.Hormonal methods of birth control prevent eggs from being released from the ovaries, thicken cervical mucus to prevent sperm from entering the uterus, and thin the lining of the uterus to prevent implantation. Hormone pills come in packs. Most packs contain 3 weeks of hormone pills. this describes all the aspects of hormonal contraceptives in brief . please comment thank uuuuu