My RE has given me Ovidrel 3 times, and for the next round is switching me to Pregnyl. I was told that Ovidrel is synthetic hcg, and Pregnyl is a natural version. The theory here is that perhaps I will respond better and have a stronger ovulation with the Pregnyl than with Ovidrel.
Has anyone else here tried both? If so, did you notice any difference? (I mean, perhaps a higher p4, or longer luteal phase?) I never had any side effects from Ovidrel---has anyone noticed any from Pregnyl?
Any other thoughts on this are welcome too.