Fostimon is a fertility medication primarily used to stimulate ovulation in women who are unable to ovulate on their own. It contains the active ingredient urofollitropin, which is a form of the naturally occurring hormone follicle-stimulating hormone (FSH). FSH plays a crucial role in the reproductive process by stimulating the growth of ovarian follicles, which contain the eggs. By increasing the levels of FSH in the body, Fostimon helps to promote the development and maturation of eggs within the ovaries, thereby enhancing the chances of conception. It is commonly prescribed for women undergoing assisted reproductive technologies (ART) such as in vitro fertilization (IVF). Fostimon is administered through subcutaneous injections, and its use must be closely monitored by a healthcare professional to optimize treatment outcomes and minimize the risk of side effects, such as ovarian hyperstimulation syndrome (OHSS).