I have been using the protein drinks for 2 months while waiting for my surgery date (Nov 2nd) not everyday but maybe 2 days a week for breakfast w/ fruit. i found Lean Body 0 sugar- 25 protein at Walmart $ 8.+ for 4 -14 oz bottles, and Ensure high protein - 25 proteins at Food lion 9.99 and get cupons for $3 off. I find they are very filling and the hunger doesn't come as early for lunch, and they taste good. I have started a pre-op diet today, I have not been told to do this by my Dr. I go to my dietary class next Monday I guess they tell me about pre diet then, but it looks like most of you started 2 weeks before so I figure it can't hurt.