nitrix oxide which is the main ingredient in no2 products will work great if you take the right supporting supplements. it is designed to increase bloodflow to the muscles which is a great thing when taking glutamine, creatine, bcaa's, protein & multivits with it. BSN has 3 products which when taken together in a sort of cycle will actually produce muscle gains and strength gains that will last after you stop. their products contain the ingredients i listed above for it to succeed. you must also eat correctly and the timing of your food intake and also supplementation intake is important for the no2 to work. those people who see no gains are just not taking the supporting products. pumps are also unbelievable when taking legit no2 products like the no-xplode from BSN. i use it and i know dragonrider was using it also and liked it.