Just an FYI - I found the Nestle ProNourish protein drink to be very well tolerated, and since it has a lot of vitamins too - it wouldn't be a bad idea to keep your nutritional level up. I ended up ordering from amazon, since i couldn't find it anywhere else. I ordered the one with no FODMAPs or dairy or gluten. I originally ordered chocolate, but I've not found it since that first time, so the vanilla is okay.