You can use it but its not necessary, use it in pct with nolva and an ai it will work great. Dont worry about testicle shrinkage it comes with the game when you start using 19-nors they will probably get alot smaller than they are now mine are about the size of marbles but after a good pct they always come back to normal. see anthony roberts pct it will tell you how to implement those three compounds for pct.