Having used IP sust, I would have to say that I beleive in the inconsistancy factor. I did 900mg (3cc's) for 10 weeks which was my second cycle, and gained 6 lbs, and then lost almost all of it. Yes I beleive there was some active ingredient present, but exactly what it was, I'm not sure. Meanwhile I will be doing my 5th cycle in february, which I know isn't a lot, but I am getting to know the ways drugs affect me. In my first four cycles, I have done omnadren, deca, eq, d-bol, cyp, IP sust, prop, winny, and primo. I know what omnadrens feel like, where you get a little bit off the prop, but at 500mg in two injections you don't really see a lot, and knowing what prop feels like at 150mg every other day. Now I was doing like I said 900mg of IP sust divided into two doses, and I felt very full right after the shot for a day or two, but two days later I felt dull and flat. I have never done suspension, but plan on it next cycle, but in my experiences I would have to say that IP's sust was either suspension, or prop, or maybe some of his suspension prop mix. I am done with IP's injectables, however I may try his orals, but that is up in the air right now. I love mexican vet grade gear because I have gotten great results.