Like other birth control pills, mini pills also consist of two active ingredients which include synthetic progesterone and estrogen. These mini pills are to be taken on a regular basis, one need to take them daily over the month. The mini pills generally contain both progestin and estrogen. The function of estrogen is, if the estrogen levels reach high in women’s body the egg is released and it travels into the uterus via the fallopian tubes which can be easily fertilized.

If the estrogen level is controlled the pregnancy can be prevented which is done by the estrogen birth control pill. But there are mini pill which only contain one of the two ingredients mostly the progestin. The synthetic form progesterone is known as progestin. The progestin pills are generally recommended for nursing mothers to avert pregnancy. The progestin in addition to avoiding the pregnancy it also stops the menstrual cycle. When the progestin level in a woman is high the mucus in the cervix become thick disallowing the sperm to fertilize the egg thereby prevents pregnancy. It prevents the thickening of the lining of the uterus thereby preventing the uterus to be conducive for the fertilization of the egg. You need not complement mini pills with the inactive pills placebo like the combination pills.