Oral contraceptives, commonly known as birth control pills, are medications taken by mouth to prevent pregnancy. They typically contain hormones, such as estrogen and progestin, which regulate the menstrual cycle and inhibit ovulation. When taken correctly, these pills can be over 99% effective in preventing pregnancy. In addition to preventing pregnancy, oral contraceptives can also help manage various health issues, including irregular periods, acne, and symptoms of polycystic ovary syndrome (PCOS). It is important for individuals to consult with a healthcare provider to determine the most suitable type and dosage for their needs.