slimfast
Hi Cynthia,
Like the poster before said it's probably ok, I would just caution you to make sure you read that label before you buy since they have so many different versions of their product. Check that sugar content in the one you intend to get, same with the Carnation Instant Breakfast, make sure you get the sugar free kind...with Carnation wasn't worth it to me for the piddly amount of protein it contained ( 4 grams in the envelope ) of course that is upped with using double milk or Carb Countdown but by the same token you can add Carb Countdown or fortified milk to a better source of protein like Unjury and get a bigger bang for your buck.
So much of this is based on personal preferance, and what you cn tolerate. Some protein is always better than NO protein if it comes down to products you hate vs. ones you like to eat or drink. The very best protein source in the world does us no good if it sits in the container unused. lol I've had a few of those.
Best of luck in your experimenting and I hope you find something you like.
Linda