I was just reading about this. I'm using dutasteride instead though as I've read it's more powerful. Something to add to this would be injectable L-Carnitine as it's been shown to increase the amount/sensitivity of androgen receptors. I was going to post about it actually. If I can find and link one of the studies that showed this rather definitively. I wonder if this is why a lot of people seem to prefer NPP to deca. The total amount of mg per injection is less and frequency of injection is greater thus giving more stable blood levels and possibly less total conversion to it's less anabolic metabolites.