I'm not saying it's ok... BUT I ate chicken and garlic like it was my last supper two days before surgery, and I ate lashings of it!.... all went well with my surgery.. !! I told the dr's secretary that I cheated, and she giggled and said "everyone tells me that but they don't tell the dr!! So you're not the only one and I guess if you have stuck to the shakes otherwise things should be ok, but DONT cheat again any closer to surgery - let this get out of your system. I have read where people have eaten the night before and paid the price by being very sick after surgery. You really don' t want anything in your system!.. and don't think that you will never be able to eat again... I eat everything, anything, and waaay too much now.... so appreciate the time that you can't eat everything... .all the best!