these products are synthetic products, You feel them while you use them, And they feel good, I've used Power Pump N02, Pump tech and Nok2. All of these products AAKG + l'Glutamine and creatine in some cases work great.. To produce Nitric Oxide, I find when your on them your elbows, shoulders, knees crack alot from the access nitric oxide leaving the joints, Which is a very common problem while your on these. You name it i tried it, Huge fan, However don't expect to achieve big gains on them, All your going to do is build a pump while your on it. When you stop using it your not going to achieve the feeling, And you'll be lucky if you gain anything while on a cycle.
But the pump sure does feel amazing.
I guarentee if you Stack 10 G of L'aginine and 20G of L'glutamine You'll feel the same effect. Nitrc oxide is naturally produced in your body without any of these products.