This seems to be hey high quality product. This is the first time I've ever purchased cardarine but from the first time I dosed this product I felt a good boost of energy and uptick in my body's metabolism. Sort of like that feeling when you eat something high in calories that you don't eat very often you get a sugar or fat rush, except without having to do anything. You can feel the product working, so it seems to be of good quality. And the prices are unbeatable. I will be a returning customer