There are two types of birth control pills: combination pills and progestin-only pills. Combination pills contain synthetic forms of the hormones estrogen and progestin.
Progestin-only pills do not contain estrogen. Progestin-only pills are also called “the minipill.”In addition, the minipill is a type of progestin-only pill that is suitable for women who are not able to take in additional estrogen for medical or other reasons.