Femilon is a combined oral contraceptive pill used to prevent pregnancy. It contains two types of female hormones, ethinyl estradiol and desogestrel, which work together to prevent the release of an egg from the ovary and make the cervical mucus thicker, preventing sperm from reaching the egg. This convenient and reliable birth control option comes in a pack of 21 active pills and 7 inactive pills, providing 28 days of protection. Femilon is also commonly prescribed to regulate menstrual cycles, reduce menstrual cramps, and treat acne. It is important to consult a healthcare professional before starting Femilon to ensure it is the right contraceptive option for you.