A recombinant (genetically engineered) human follicular stimulating hormone, known as a 'fertility drug'.

GoldBamboo

... FOLLITROPIN ALFA (Gonal-F®) is a hormone that is identical to follicle stimulating hormone (FSH), a natural hormone produced in the body of both men and women. In women, FSH helps stimulate the development of eggs within the ovary. Gonal-F® is used to treat women who have not been able to become pregnant because of problems with ovulation; this drug is used with other fertility drugs. This drug is also used in certain in vitro fertilization (''test tube baby'') programs. For some men with infertility, Gonal-F® helps to stimulate the production of sperm. Generic follitropin alfa injections are not available. ...
Drug Digest - more...

Follicle Stimulating Hormone Follicle stimulating hormone, beta poly ...
Wikipedia - [full article]

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