From what I read Creakic is neither Mono or ethyl ester. It is a formula of creatine that offets the effects of Reactive Oxygen Species (ROS) which will help your muscles absorb the creatine and help with muscle cell repair. That is what they use for their main selling point. They actually take shots at mono and ethyl products. From what I read it seems to work very well from the reviews I read. I was talking to a buddy and he recommended GNC’s 189 which is very similar to Creakic but the cost per serving is about 1/2 the price.