I did 5000 iu after a long long mild cycle of Test.Cypionate.
My sex drive did increase a lot, and initially my eggs ached, a pleasant ache, which to me a sign of it kicking in.
But remember the Clomid/Nolva.
Also a bit pricey. If it wasnt so I would use it a lot more often in smaller doses(max 1500 iu)
Cheers