EW - Here is a great protein supplement that a friend of mine who also had the band surgery used to take after her surgery. Even though I never had the surgery done, I started taking it for my workouts because it's such a great product! It's easy and convenient, you get an entire 42 grams of protein in a little 3.1 ounce bottle....no sugar, no fat and only 176 calories.
You can check it out at
http://www.idssports.com/product.php?id=9919&cat=10