Do you think to protein drinks are giving you diarrhea? After my surgery certain shakes sent me right to the bathroom, and I was dizzy all the time because I was getting zero calories. I started drinking unjury chicken soup flavored protein, as well as unflavored protein powder in zero calorie lifewater. It seemed I could only tolerate warm or room temp drinks. I am three months post op and a few brands of protein shakes still do not agree with me...maybe you can try a few different brands and see if you can tolerate a specific brand. For me, the pure protein brand is best tolerated... but if I have a special k shake I am running to the bathroom within 15 minutes!