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Optimum Nutrition Gold Standard 100% Casein is a slow-digesting protein powder in Chocolate Supreme flavor. This 1.8 kg container provides micellar casein protein designed to feed muscles over an extended period, making it ideal for overnight recovery and between meals. Key features: • 24g of slow-digesting protein per serving • Contains micellar casein • Chocolate Supreme flavor • Anti-catabolic formula • Ideal for overnight muscle recovery • Mixes easily with water or milk Casein protein forms a gel in the stomach that allows for a sustained release of amino acids over several hours. This makes it different from whey protein which digests more quickly. The product comes in a black container with the signature Gold Standard branding. The formula includes enzymes to support protein digestion and absorption. Best consumed between meals or before bedtime when a slower-digesting protein is beneficial.