Bests & Worsts Reviews from Amazon

They do work. I have tried other supplements for focus and energy without caffeine, and I can tell a difference, so they are effective for me. Outside of this, I don’t use caffeine, so it was an experiment. I only take one pill a day, and not everyday. My daughter uses it to study, and she notices a difference too. If you don’t know what you need, start with one. They aren’t hard to swallow and don’t taste bad. I cannot speak to longevity because we won’t have them for too long.