Polytink! 2 summers ago I tried the Vitalus Shake diet. First of all, you must be sure that you are able to handle all of the protein, potassium etc. in this shake. I loved it! I was using 2 scoops per day (morning and evening) in a yogurt, fruit based shake w/Vitalus added to it. You can go on line and check this method out. I lost weight and felt better than I have since my body stopped producing estrogen. However, and this is very important!!! I did not know that I was at Stage 3 Kidney Disease. Fortunately, I was due for a general check up and using this shake had put me in Stage 4. I was shocked! I had no idea. No physician had ever mentioned that I needed to watch my food in take because of my kidneys. As soon as stopped the shakes my levels returned to 3. With this shake you must have a doctor's approval and you must drink a ton of water.