Hey Heather, I haven't been sleeved yet ( waiting for insurance approval) , but my surgeon recommends Isopure that is a clear Protein drink in a glass bottle for the first week. I've been trying different types just to prepare myself. Isopure has got 40 grams of protein per bottle. They sell them online, GNC, I bought mine at the The Vitamin Shoppe. They ruun about $3.75 a bottle but tastes sooooo much better than the powder Protein drinks. I was told to freeze it into icecube trays and then add to Water. This way you get your protein and water in. It kinda taste like Gatorade but kinda leaves a chalky after taste. (Only if you drink it straight from the glass bottle). My favorite is Grape Frost. Try it and see what you think. Good luck and let us know if you try it!