CapK

Yes - sounds like you have an allergy or intolerance to some ingredient in that shake. I couldn't stand the sweetness earlier on (I was OK with it once I was a month or two out), so I used mostly the Unjury chicken broth flavored one. Although that has whey protein isolate, so if you've become lactose intolerant, that probably wouldn't work. You may have to experiment with different brands - or ask your dietitian if you can get off them early. If you can meet your protein goals through other food, you should be able to give them up...

Everyone is going to respond differently to this as it's so different with each person to what they can be ready for, Dr and NUT orders, etc. I've learned after much research to go with what you can handle. After the surgery, all Protein Shakes just made me nauseous or food come back up (not quite vomit but definitely some coming back out). I was pureeing turkey meatballs (ONLY the Wegmans turkey meatballs-can't handle anything else) right at the soft food stage but mixing with some sauce or fat free gravy.
I still can't handle chicken-even soft. eggs are by the day after I started just learning to chew until pureed in my mouth. I could handle mashed potatoes that were plain at that stage and I still live on sugar free popsicles at 4 months out. cheese is good for me; ice cream KILLS me. Most of my calories comes from the turkey meatballs and mixing cheese with them as I can handle the cheese that is shredded. This is really just a thing of trying what you can handle off of the list you are given. I had some complications after the surgery so the recovery was longer but after about 4-6 weeks, I could get a bit more daring with trying things. I still keep nausea pills with me just in case but try not to use them unless really vomiting.

They are for before and definitely after. I am still surviving mainly on shakes at this point. I couldn't stomach most Protein powders after surgery. Was told to look into Protein2O which is a clear drink and much easier to stomach. As well Revolution Splash which is also supposed to be way easier and lactose free.