Just purchased my first bottle of Craze from Nutrlanet. I was so excited to feel what most are feeling. Took a scoop the first day at work, to see how I responded to it. Didn't really feel anything. Today, I took 2 scoops mixed mixed in my bottled water.......still nothing. No zone, no extreme focus.....nada! I am a non reponder to piracetam, ALC and lots of others, so I'm sure its not the product(as so many can attest to). I've also used Activate Xtreme, Triazole and Lean Xtreme with very good results, so this is not a knock on DS, just bummed that Craze doesn't seem to work for me.