I don't know about Muscle Milk.... What you need to do is to read the label!
My husband buys a protein powder that does not have chemicals or additives, and makes his own protein shake every evening. That way he knows what he is putting in his body... He uses the protein powder, ice, lowfat milk, and to make it taste good, a scoop of all natural ice cream (Walmarts brand believe it or not - Great Value all natural premium- no high fructose corn syrup - very good).