I'm not on the pre-op liquid diet yet but I've been slowly adding in Protein shakes for Breakfast or Snacks into my diet sporadically. I've tried both plant-based powder (Vega original) -- 15-22 g of protein -- and also a generic CVS-brand whey powder packet (26 g). I use almond milk and lots of ice, which makes them thick...but I've found that they're not very filling for me. I'm hungry for "real food" 30 minutes to an hour after I drink them. This doesn't bode well for when I have to do the real pre-op diet of 3 shakes and a lean meal a day.

Any one also have this problem? Any tips on making it more filling? I need to keep the calorie count below 200 so I can't add too much to these shakes. Thanks!

I had this same problem with just about every kind I tried.

I tested pretty much all of them I could find that were approved for my program in the months leading up to surgery.

The only two I found that left me with that full feeling were both ready-to-drink. Premier Protein and Muscle Milk Light. All others left me with the same feeling you are having.

Now, since surgery, I have just stuck with the Premier Protein and have been happy. Yes the cost is higher this way, but with all of the money I'm saving on other food, I figure it isn't that big of a deal.

I'm not to the surgery yet but have been practicing and trying to cut back. The Protein shakes and fruit and or greek yogurt mixed and I'm still hungry. It doesn't help at all yet.