I met with the nutritionist today (pre-op). Their requirement for a Protein drink is that has 20-30 grams of protein and less than 17 grams of carbs. I personally need to avoid the whey Proteins due to a lactose intolerance.
If you drink a soy, egg or other non-dairy protein and find it works well after the surgery, please let me know. I'd love to find them pre-mixed, but not sure if that's available.
Thanks