Hi, Microlite is a combination birth control pill that contains ethinyl estradiol and levonorgestrel. It is used to prevent pregnancy by suppressing ovulation, thickening cervical mucus, and thinning the lining of the uterus. When taken as directed, Microlite can be an effective way to regulate periods and prevent pregnancy. Some common side effects of Microlite include nausea, headaches, breast tenderness, weight gain, mood changes, changes in menstrual bleeding patterns (e.g. spotting, breakthrough bleeding), and decreased libido In rare cases, Microlite can cause serious side effects such as blood clots, stroke, and heart attack. These risks are higher in women who smoke or have a history of certain medical conditions (e.g. high blood pressure, diabetes, blood clotting disorders). If you are considering starting Microlite again, it is important to talk to your healthcare provider about your medical history, current medications, and any concerns you have about side effects. They can help you determine if Microlite is the right option for you and advise you on how to take it safely and effectively. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Priyanka, General & Family Physician