I am about through with my Opticen and I plan on going to a very low carb diet. When I do this I will be switching to Nitrean. I know the Opticen has some thickening agents to make it more filling but from what I know the Nitrean does not. I do not want to give up the thickness the Opticen has when I switch to the Nitrean, but from what I remember Nitrean is rather watery when mixed up. Any suggestions?