I use Glucerna occasionally, 1.5 Cal, 8 ounces, and has 356 calories, 19.6grams of protein, 31.5 grams of carbs, and 17.6grams of fat. It's not sugar free, has fructose. Sugar increases saliva, increases appetite especially when combined with fat, so I'm not too concerned at this point. 3000 calories is kind of high, depending on your height, weight, activity, medical condirions, recovery or wanting to gain weight. For my weight, 175 lbs and height, activity level its about 2100 calories a day I need to maintain my weight. I know protein can cause a hardship on the organs, like liver and kidneys, and recommendations vary up to 1gram of protein per pound of body weight.