Tricilest is a pharmaceutical medication primarily used as an oral contraceptive, also known as a birth control pill. It is a combination pill that contains two hormones, ethinylestradiol and levonorgestrel, which work together to prevent pregnancy by inhibiting ovulation, thickening cervical mucus to prevent sperm from reaching the egg, and altering the lining of the uterus to make implantation less likely. Tricilest is taken once a day, preferably at the same time each day, to ensure its effectiveness. It is important to consult with a healthcare professional before starting or changing any contraceptive medication to determine the most suitable option based on individual needs and medical history.