I would get different samples of protein packets for your shakes. From your local vitamin shops. And maybe order on from the bariatric shops. Cause our taste for everything changes after surgery. So what taste good now might not after.. As for vitamin Gastric bypass patients we have to take vitamin for the rest of our life's.. My doctor recommend's chewable. I take flintstones,bariatric advantage calcium citrate. Bariatric advantage sublingual b12.. But your doctor should recommend what he wants you to take as far as vitamin.. I hope this helps and welcome to your new life.