@judy75 .. when i had c.diff and on the lengthy vancomycin treatment i already had ibs-d ... when on vancomycin could not take anti-diarrhea meds so it was doubly horrible .... i lost either 15 or 25 lbs over the summer... dont remember now... but didn't take a probiotic, nor yogurt, just what husband and I were eating but maybe 1/4 portions.... definitely no tomatoes or spicy sauces; scrambled eggs ok, bread, bland foods...I bought a book on cdiff which i now see advertized on internet which was overkill and so scientific, scared me and made situation worse... but I can look in there and see what she suggests as optimum foods - let me know and i can copy.... i dont take vitamin pills but looking back I dont think was getting enough nutrition esp. cos of the constant diarrhea... am sure you will get lots of idea from comments here, good luck judy