Protein Powder in Shake - Kosher?

Using protein powder the way I do - and likely many others - it is added to a shake for health reasons. The protein, the vitamins, etc. With the exception of meat and milk (i.e. whey protein mixed with meat ingredients) and other clear issues, would all protein powder basically be okay to use in this way?

I think I’m kind of asking if any protein powder at all, labeled vegan, would be kosher. Thoughts?