I just found out I have been using an inferior product for months, I am so unbelievably irritated. I have been taking a nitric oxide boost while working out, just hoping in a few months something would happen. Then at the gym I was given a free bottle of nitric oxide made by Crank Tech. I felt the difference the first day. I can't believe I spent all this money the last few months on a inferior product, and the free product did better. What is up with that! I know now there is a difference in products. I just felt I was given wrong advise from the beginning. aaaaaaaah.