Hormone-releasing IUDs such as LNG-20 are synthetic forms of hormones such as progesterone. Hormone releasing intrauterine devices or hormonal IUDs are contraceptive devices placed in a woman’s uterus to prevent pregnancy by continuously releasing a low dose of certain hormones.

Description Contraceptive caps are also called cervical, vault or diaphragm caps. They are barrier contraceptives. The Mother’s Clinic supplied it to women. The clinic opened in 1921. Contraceptive caps sit over the cervix. They act as a barrier to sperm entering the uterus.

Find a Health Center What are the different types of birth control pills? There are 2 types of birth control pills (combination pills and progestin-only pills), and many different brands. Combination Pills (COCs): Combination pills have 2 hormones: estrogen and progestin. Combination pills are the most common type of birth control pill.