My surgeons office has us purchase a pre-op diet Kit from them which is from Bariatric Advantage, which consisted of a 3lb bag of meal replacement, 4 on the go bottles meal replacement, and 8 protein bar meal replacements. They didnt explain in detail in the 201 nutrition class what we're suppose to do with this, how much etc, so a friend of mine who had same surgeon explained to me. She sd 3 shakes a day and all the broth or jello (not red) we wanted, ir since I got the pkg with the bars, I can have 2 shakes, 1 bar, all all the broth and jello wanted except on day before surgery. Day before surgery, no protein drinks or bars.....only the broth and hello and gatorade or crystal light (not red).