Carnitine take a long time. Carnitine has tried many manufacturers and in different forms. I stopped in liquid form. I take before a workout in the gym and during cardio on the track. Customers who bought this Carnitine because I decided to compare with liquid carnitine from 3000mg NOW, and because the manufacturer, as they say, a pioneer in the production of carnitine. The result - a taste disgusting. A liquid such as water. Bottle in a sports bag to flow !!!!! Their task is, in principle, to cope up with the Joneses. Once I bought two cans. I will no longer be ordered.