This is a good supplement to buy. The bad thing about this Solaray Arginine is that it comes in 500mg tablets. I would prefer for it to come in larger sizes, but it is okay because you can just multiple tablets and then you will see results. It is great for getting a good pump when you work out, without having to spend the money on a preworkout supplement. I like the fact that it is a good value and that you can get a good pump without taking a bunch of needless things.