eFSH is a follicle-stimulating hormone obtained from equine species, used to stimulate fertility.
Clinical studies
The effects of eFSH on mares is observed by creating a treatment group that received 12.5 milligrams of eFSA injections twice a day when the follicle of the mare was 25 mm in diameter then received human chorionic gonadotropin(hCG) at 35 mm follicle diameter while a control group only receives hCG at 35 mm follicle diameter.
Embryo transfer
The application of utilizing eFSH to increase the efficiency of equine embryo transfer was tested at the University of Saskatchewan. Embryos from 12 donor mares at 8 days of ovulation were recovered, scored, then transferred to 37 recipients mares who were tested for pregnancy after 7-10 days. 5 pregnancies resulted from the 15 embryos were recovered from the eFSA treatment group and 4 pregnancies occurred from the 6 embryos collected from the control. The usage of eFSA in the study had a correlation with a lower score.