Sayana Press Uniject is a form of injectable birth control that contains the hormone medroxyprogesterone acetate, which is a type of progestin. This medication is designed to prevent pregnancy by stopping ovulation, thickening cervical mucus to prevent sperm from reaching an egg, and thinning the uterine lining to prevent a fertilized egg from implanting. Sayana Press is unique because it comes in a pre-filled, single-use injection device called Uniject, making it easier and more convenient for healthcare providers to administer. This method of contraception is long-acting, with each injection providing protection against pregnancy for approximately 13 weeks. Its ease of use and long duration make it an attractive option for women seeking effective, long-term birth control.