Liquid creatine is absorbed under the tounge directly into the bloodstream. You do not have the water retention that you normally have with other creatine. And it is true that you only take it on days you workout. The problem that I see with it is that most of the liquid creatines that I have run across only have 2.5 grams of creatine per serving. Cell-Tech and Trans-X have 10 and 12 grams per serving, respectively. The only time that I recieved good gains from liquid creatine was when I double the dosage. I now stick to Trans-X creatine and andros.