I was skeptical, at first but decided to give it a try.
At first I felt nothing. I called and talked to their customer service support. He suggested that do to my size (6'3" 240) that I take 3 of the Protazen.
I did, and that's when the magic happened! It gave me better focus, and helped me when I was tempted to look at things I shouldn't-when my brain was looking for a dopamine fix.
I can't say enough-I can't imagine life without Protazen.