My preop starts on Thursday. I have to drink 3 or 4 Slimfast shakes a day for 10 days. Seems counter intuitive since each one has 18 g of sugar. Anyone else have to drink these Pre op? The good thing is that they are filling, unlike regular Protein shakes.

The Slim Fast High Protein was one of the shake options on my pre-op plan. It has much less sugar and more protein than regular Slim Fast. Maybe your doctor meant that version?

I had to do 30 days pre-op diet, and I opted for Myoplex Lite, which was 20 grams of protein and 1 gram of sugar. It is a Meal Replacement that is also quite filling.