Fertility medication, better known as fertility drugs, are drugs which enhance reproductive fertility. For women, fertility medication is used to stimulate follicle development of the ovary. There are currently very few fertility medication options available for men.
Either Gonadotropin-releasing hormone (GnRH) or any Gonadotropin-releasing hormone agonist (i.e. Lupron) may be used. GnRH stimulates the release of gonadotropins (LH and FSH) from the anterior pituitary in the body.
Clomiphene (trademarked as Clomid) is a selective estrogen receptor modulator (SERM). It is the most widely used fertility drug. It is used as an ovarian stimulator by inhibiting the negative feedback of estrogen at the hypothalamus. As the negative feedback of estrogen is inhibited, the hypothalamus secretes GnRh which in turn stimulates the anterior pituitary to secrete LH and FSH which help in ovulation.
Although primarily a breast cancer treatment, aromatase inhibitors can also work as fertility medication, probably through a mechanism similar to clomiphene.
For example, the so-called menotropins consist of LH and FSH extracted from human urine from menopausal women. FSH and FSH analogues are mainly used for ovarian hyperstimulation as well as reversal of anovulation.
There are also recombinant variants which are created by inserting the DNA coding for it into bacteriae. The bacterial DNA is then called Recombinant DNA. Examples of recombinant FSH are Follistim and Gonal F, while Luveris is a recombinant LH.
Human chorionic gonadotropin
Human chorionic gonadotropin (hCG) is normally produced during pregnancy. However, it can also replace LH as an ovulation inducer.
hMG is a medication containing a follicle-stimulating hormone (FSH) and a lutenizing hormone (LH).
Research in male fertility medication is currently ongoing. A study in Egypt assessed the efficacy of a combination of clomiphene and vitamin E in improving sperm count and sperm motility in male infertility.
- Menotropins at the US National Library of Medicine Medical Subject Headings (MeSH)
- Ghanem H et al. Combination clomiphene and antioxidant therapy for idiopathic male infertility: A randomized controlled trial. Fertil Steril 2009 Mar 5; [e-pub ahead of print]. Published in Journal Watch General Medicine March 31, 2009