I never had a problem with it when I used it. But, it also has been awhile since I used it too. From what I understand the company has changed hands, so I don't know if this is the original formula. The first origianl formula had Micellar protein, with Casein and all that good stuff.
All's I know is if you get the vanilla flavoring, don't blend it till ready to drink! I had blended one at home took it to work, put it in the fridge and 3 hours later drank it. It was nasty I would rather lick a ...... well you could pretty much fill in the sentence.