Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH) are two hormones that play an important role during your cycle. FSH is responsible for the recruitment, development of follicles (bag in which egg is developing) and maturation of oocytes (eggs). LH is responsible for maturation and ovulation. When FSH is released by your hypotheses in the brain, it stimulates the growth of several follicles. In order to recruit the best follicles more acidic FSH is excreted during the early part of the follicular phase of the cycle. After approximately 6 days the FSH excreted by the brain becomes less acidic to assist the oocytes to mature to ensure that the follicle with the best oocyte will be released. Delfran’s gonadotropin product contains sufficient amounts of highly acidic and less acidic purified human FSH that assist the body to recruit the best follicles available and to assist with the maturation of the oocytes. For more information please contact your infertility clinic and ask your doctor what makes Delfran’s FSH different from the other gonadotropin products available on the market. For more information visit IBSA