Boston Medical Center researchers are investigating a potential new injectable birth control called levonorgestrel butanoate, or LB for short. LB is a birth control method like Depo-Provera (an injectable progesterone birth control that you get once every three months), but with a different type of progesterone called progestin.

Progestin is a safe and common hormone in other birth control methods, like the implant (Nexplanon) and IUDs. This hormone works by preventing the ovary from releasing an egg, so women do not get pregnant. We hope to see if the LB injection works to prevent the egg from releasing, and to see how long this prevention lasts. Since we are not sure how effective LB is as a birth control yet, participants who are having sex with a male partner(s) are required to use a non-hormonal birth control method for the duration of the study.

Your participation in this study may help researchers develop more advanced forms of birth control in the future. Help further women's health research, join our paid study today!