Pregnyl, Follutein, Profasi, Choragon and Novarel, it is extracted from the urine of pregnant women. In Ovidrel, it is produced with recombinant DNA technology.
I looked into Ovidrel, it is produced with recombinant DNA technology, years ago and the cost differential was the end of that for me.
Either source may be equal in terms of fertility, but [guessing] human source might have some small amounts of FSH that then would be beneficial. hCG alone can support sperm production, but is that really true? rDNA hCG might be slightly different.