Tried every preworkout supplement you can think of over the last ten years. This is the first one since the original Jack3d, that hasn’t been available for years, that I can honestly say I’ve felt the effects of. Clean energy, no jitters, no crash. Worth every penny. Great ingredient profile. No proprietary blends and no unnecessary colors, dyes or fillers. Great energy in the gym and always delivers the pump I am looking for. Definitely gonna stick with this one.