Im new to this supplement. Purchased 3 bottles, and going to run them all back to back to back. I like it. Was running l-cartinine and still will take a tablespoon of, but these capsules are all you need. I feel like it's higher quality then liquid cartinine. When I take the 2 capsules it's with my pre workout, just need to take once a day, if you want maybe just 1 before bed. How I know it's potent and high quality is because my arms will start to sweat, the top of my arms, and they stay moist until shower. That's difficult to do when at rest. Awesome. If its doing that, then it's working in the inside for sure. Don't hesitate to try, it WADA approved and a few basic ingredients. Use with a good low fat, lower carb diet, and train. 💪🏼