Premier Protein
You can get the premier protein premade shakes at Costco. They come in Vanilla and Chocolate. I don't know if they are sold anywhere else.
I'm pre-op but I have had the shakes. Only the chocolate one, have not seen Vanilla available in the two costco's we have in the city. I like the chocolate it reminds me of chocolate milk but less sweet.
Hope this helps. Good luck to you.
I like the chocolate ones. In the US you can get different flavours. I have not seen them sold anywhere but Costco but they could be not sure. There is a Canadian site for Premier Protein, I believe it is premierprotein.ca. I have not tried vanilla. There are mixed reviews on them I like them but others do not. The one thing that I don't like is the smell but I have gotten used to it.