Protein
As soon as you get home from the hospital. Lack of protein while you're losing a lot of weight, will lead to muscle mass loss, which you don't want. You'll need around 80 grams of protein daily. This is usually about 3 shakes. Do not try to double up on them, as too much proein (>25 grams) may not be absorbed properly. Whey protein is the best, not the soy.
Dave Chambers, 6'3" tall, 365 before RNY, 185 low, 200 currently. My profile page: product reviews, tips for your journey, hi protein snacks, hi potency delicious green tea, and personal web site.