Hi. My husband's s/a was normal, but he's taking Fertility Blend just as an added help :) I don't know about fertile aid. It's probably similar 'cause Fertility Blend has l-carnitine as well. Good luck !!!
I don't know the product firsthand. But, I think I've read that L-carnitine works best when taken in conjuntion with L-Arginine and L-Lysine sp? They are amino acids if I remember correct and do help with male fertility. Watch zinc. While it is essential to male fertility, it is stored in the body and can be o'd and serious if is.