What is Casein? The USN Casein Night Time Protein is ideal for anyone looking to maximise their recovery periods with a premium, great tasting, slow digesting shake. The maximum recovery periods for your body are during your sleep, the USN Casein provides you with shake which is the slowest digesting protein available. Our premium formula offers great tasting ultra-premium micellar casein with Aiminogen. What are the benefits? Containing an ultra-premium slow digesting micellar casein, our tasty supplement makes the most out of your optimised recovery time (whilst you sleep) to feed your muscles throughout the night. Whilst being noted for its great taste, the USN Casein is formulated specifically to provide your challenge with a premium night time supplement. What is Casein? The USN Casein Night Time Protein is ideal for anyone looking to maximise their recovery periods with a premium, great tasting, slow digesting shake. The maximum recovery periods for your body are during your sleep, the USN Casein provides you with shake which is the slowest digesting protein available. Our premium formula offers great tasting ultra-premium micellar casein with Aiminogen. What are the benefits? Containing an ultra-premium slow digesting micellar casein, our tasty supplement makes the most out of your optimised recovery time (whilst you sleep) to feed your muscles throughout the night. Whilst being noted for its great taste, the USN Casein is formulated specifically to provide your challenge with a premium night time supplement.