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About this item

• SLOW-RELEASE PROTEIN - R1 Casein provides 25g per serving in a thick, satisfying shake. We utilize micellar casein protein, so it keeps working long after you've left the gym. 100% of protein in this formula is from micellar casein.
• QUALITY FORMULA - R1 Casein is naturally rich in all nine EAAs, including the three BCAAs. We intentionally left out: non-casein proteins, creamers, and banned substances.
• HOW TO USE IT - This slow-release formulation is best used during extended periods of downtime, like at bedtime or between meals.
• BETTER INPUT, BETTER OUTPUT - You’ll see these words all over our products. It means we’re relentlessly pursuing better input to ensure we never put a product on our site—or on a shelf—that we wouldn’t put in our own gym bag.