Desogestrel is primarily used in hormonal contraceptives due to its progestogenic activity. It is a key component in oral contraceptive pills, helping to prevent ovulation by inhibiting the release of gonadotropins. This makes it highly effective in preventing pregnancy when taken as directed. Additionally, it is used in hormone replacement therapy (HRT) to manage symptoms of menopause, such as hot flashes and vaginal dryness, by providing a stable hormonal balance. Desogestrel is also utilized in the treatment of menstrual disorders, including heavy or irregular periods, by regulating the menstrual cycle. Its low androgenic activity reduces the risk of side effects like acne or weight gain, making it a preferred choice for many women.