I have been having NOX15 for over 3 weeks now, I have noticed a massive increase in my energy levels with no crash. Previously I was finding myself going to get an energy drink that would in turn give me headaches and would crash by 1pm. Now I am able to complete all of my tasks, go to gym run around after our big family and not feel exhausted. I'm getting better sleep, I'm energised, my body is functioning and it tastes great! It is a must have for my day.