After about five days use of NitroNOX it is my opinion that this preworkout is a quality product with excellent ingredients. Super focus and energy throughout the day. No crash like some others and no stomach issues either. My only negative comment would be not to take a serving to late in the day, I couldn't get to sleep a couple of nights...that may be different for others. I'm not one who can take any stims in the afternoon. Try adjusting the serving size if you use it for afternoon or evening workouts.
Overall excellent product will recommend to friends.
Overall excellent product will recommend to friends.