Gonal-f is a fertility medication primarily used to stimulate egg production in women who are having difficulty conceiving due to problems with ovulation. It contains follitropin alfa, which is a synthetic form of the follicle-stimulating hormone (FSH). FSH is a natural hormone that plays a crucial role in the growth and development of eggs in the ovaries. Gonal-f is administered through subcutaneous injections and is often used as part of assisted reproductive technologies such as in vitro fertilization (IVF) to increase the chances of pregnancy. It may also be used in certain cases to stimulate sperm production in men who have a low sperm count due to a deficiency in FSH. As with any medication, the use of Gonal-f should be under the guidance of a healthcare professional to ensure proper dosage and to monitor the response to treatment.