WLS 3/30 post op day 6. Had trouble with my lithium meds when I introduced them day 2. Caused all day diarrhea for 2 days. My psychiatrist recommended reintroducing after a couple weeks. New stomach also can not tolerate the protein shake I had been using pre-op. Ugh. Switched to Genepro medical grade protein dded to chicken broth and doing fine. Watered down poweraid zero to make it less sweet and that is nice option to water. I tried 2oz of plain Greek yogurt on day 4&5 but the hives I have had since day of surgery have gotten progressively worse and I need to cut that out as well. 3 more days to purée! Never been so excited