Now before I tell you it is a waste of money it would be jumping the gun slightly but only by a fraction. The big caveat to the review of this product is that I train every morning at 6am. Now for me this works well but for others there is no way you want to be facing a 200kg deadlift or squat at that time of the morning. I have been doing this for over 15 years and it suits me. As a result taking a supplement that pep's you up in some way is in fact beneficial to an extent. However to believe that you get this massive vasodilation is crap. Well at least for me anyway. The one benefit I got from this product was it did seem to wake me up and focus my mind a little more through the early morning sleep haze. I do attribute this to this product as I have read other anecdotal case studies of people getting this effect from a Nitric Oxide booster. Did I however feel "long lasting muscle pumps" or "raging intensity" or "non stop endurance"? Frankly no. Besides waking me up somewhat and giving me a reason to drink 250ml's of water with some orange flavoured goo in it I must admit this is about the extent of the effects I got from this product.
Now would I write off all NO booster's. Probably not. There actually is some evidence for these products but like most supplements it is often by drawing some theoretical effects and dumping it into a container and selling the effects from some rat study or the like. I have provided a link to a nice summary I have found online about these products. http://www.naturalhealthresearch.org/nhri/?p=1669