Birth control is used to prevent pregnancy, regulate menstrual cycles, and treat acne. These medications work by mimicking hormones in the body. This helps them prevent ovulation, thin the uterine lining, and/or make it harder for sperm to reach an egg. Common classes include combination oral contraceptives and progestin-only pills. Combination oral contraceptives, like norgestimate / ethinyl estradiol (Sprintec) and drospirenone / ethinyl estradiol (Yaz, Gianvi), are available as oral pills. Progestin-only pills, such as norethindrone (Errin, Heather), are also taken orally. Injectable options like medroxyprogesterone (Depo-Provera) provide a longer-term solution. These various forms offer flexible options to help you manage your reproductive health effectively.