Muscle Milk Zero Protein Shake, Chocolate, 11.16 fl oz Bottle, 4 Pack - Muscle Milk Zero Chocolate (11 oz) is an energizing protein shake that can be consumed as an on-the-go breakfast or anytime snack or to support post-workout recovery and muscle growth. It contains a combination of slow releasing and fast releasing proteins to help increase amino acid levels. These essential amino acids play a role in muscle growth. Also try adding your protein shake to coffee, smoothies or even oatmeal when you’re looking for a protein boost.