I am having surgery on 4/23 and I am also on Optifast shakes (min of 3 max of 5 per day) for 2 weeks prior to the surgery. The first few days were extremely difficult, but now it is getting easier.
Also am allowed SF Jello, SF Popsicles, SF beverages - basically any liquids that you can see through :cool:
Dr. says it can help shrink your liver up to 40 percent prior to surgery.
I also believe that it helps you identify the dreaded "head hunger" that I have read so much about!