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Progestin is a synthetic hormone that mimics the effects of progesterone, a natural hormone produced in the body. It is commonly used in hormonal contraceptives, such as birth control pills, to prevent pregnancy by suppressing ovulation and altering the lining of the uterus to make it less receptive to a fertilized egg. Progestin also plays a crucial role in supporting pregnancy and maintaining the uterine lining during the menstrual cycle. It is sometimes prescribed for various medical conditions, including irregular menstrual periods, endometriosis, and hormone replacement therapy. Progestins are available in different forms, including pills, injections, implants, and intrauterine devices (IUDs), and they can have different formulations and combinations with other hormones depending on the specific purpose and brand.

Progestin may have side effects including:

High blood pressure

Hair loss

Anxiety and depression

Increased risk of breast cancer