for anybody who has done both deca or npp,i have used deca a few times and it has messed with my libido every time but i was curious if the npp version would more than likely do the same,if anybody has done both please let me know,buy the way my stats are 190 5'8 tall 7% bf 32 yrs old currently on hrt 125 mgs weak of test cyp 2ius growth five days a weak,just wanting to add little deca for eight to 12 weaks every few months or so for the joints luv the way deca lubes the joints but without the loss of the libido.