I have my op on the 11th and went to the the consultation yesterday, they told me three slim fast and upto 6 muller light yogs a day with plenty of fluids, they didn't give me any leaflets or any indication that I would be sent any, I'm having a band though so I'm not sure if it would be different. But if it's to shrink your liver then I'm sure it will be similar, hope this helps xx