I was told during the clear liquid and full liquid stages, as long as they are no sugar added fruit juices (and if cranberry, diet cranberry) I could have them. Considering that I consumed about 12 oz yesterday and two 4 oz sf jello cups in total for the day, I don't think I have to worry about the calories yet. Today, I'm really trying to work on this giant Isopur, which has 40 grams of protein, but it's slow going. I thought I'd be much better at this. But I have not lost my determination, determined1!