Fluids should generally be calorie-free. Your surgery is effective at limiting calories from solid foods, but not liquids. Exceptions are up to 3 8oz glasses of low fat milk, 6 oz of 100% juice, and protein drinks as a meal/snack replacement. Be sure to drink at least 64 oz of calorie-free (or very low-calorie) beverages every day. Drink between rather than with meals to prevent overfilling your smaller stomach.