I take this product in conjunction with a whey protein and creatine monohydrate a either after training or on training days immediately after getting up. Once it fills very high quality and free of grease on my glycogen storage and secondly it lets through the insulin increase the creatine better and faster coming into the cells. I've been using this product of German origin and have no doubts in my combination great results as far as the muscle growth.
It is recommended - but are cheaper versions! That is why 4 stars