what can you eat during the pre op gastric bypass diet
Gastric Sleeve Surgery Preoperative Diet Please be sure it contains at least 20 grams of protein per serving. Sugar should be half the grams or less than protein- if you have 20 grams of protein, it should have less than 10 grams of sugar. General Overview â Gastric Sleeve Surgery Preoperative Diet: 2 â 3 protein shakes per day.