Health Library
Progestin is a synthetic derivative of progesterone and is commonly used in contraceptive methods. Progestins found in oral contraceptives, implants, injections, and intrauterine systems (IUS) prevent pregnancy by suppressing ovulation, thickening cervical mucus, and causing endometrial changes. Some progestins may have anti-androgenic or anti-estrogenic effects, which can result in varying side effect profiles.