Have not tried the new version but took the older versions for ahwile off and on for enegry. The old version work really well at producing a hell of a lot of energy, it gave me motivation and focus as well. The new one is suppost to be time released and AX says it will be the best fat burner they have yet to put out. On the AX board they have some reviews, it seems they are liking the new version so far.