Is it ok to take bone protein or 1 tbps of apple cider vinegar in a glass of water while you have diverticulitis?

Depends on stage: It depends on how severe & how long ago the process started, & therefore when you were diagnosed / what diet has been prescribed. I'm assuming you've seen a physician or surgeon to know what "diverticulitis" is. If you've been advanced to a liquid diet (normally done about 2-3 days after bowel rest), then I don't see any problem in taking protein powder or vinegar mixed with water (it's still liqd