I'm on day 6 of my liquid diet, and I am suffering, though not as much as the first few days. I usually have premade Isopure protein drink, Gatorade zero protein, sugar free popsicles, and water. I can't stand protein shakes and the Isopure is a stretch.. Had to deal with quick headaches the first few days (they're manageable), nonstop nausea and stomach churning, fatigue and spitting out foam from dehydration. Not to mention my family is eating my favorite foods close to me lol...