I usually notice it by day 10. First is my hunger, then I get the pumps. It’s definitely a different feeling of kickin in then tren. I don’t get the night sweats, acid reflux, brain fog, and a shitty attitude. With npp I’m virtually side free with just hunger and feeling amazing. Because it’s not as harsh don’t think you’re wasting your time. I literally will watch layers of muscle fiber pack on me. Give it time; I also always run equal amounts of test. Check back in bud and good luck. It really comes down to diet because npp will also cut me up.