ON Casein Protein

Maximize Overnight Muscle Recovery with Optimum Nutrition Gold Standard 100% Casein

Prevent muscle breakdown and fuel continuous growth while you sleep with Gold Standard 100% Casein from Optimum Nutrition (ON). Designed specifically for nighttime recovery and extended periods between meals, this industry-leading micellar casein delivers a steady stream of vital amino acids directly to your muscles when they need it most.

Why Choose ON Gold Standard Casein?

• Up to 8-Hour Sustained Delivery: Digests slowly to provide prolonged amino acid coverage throughout the night, holding off muscle breakdown (catabolism).
• 24g Pure Micellar Casein: Every serving packs 24 grams of premium, premium-quality slow-digesting protein.
• Packed with BCAAs & Glutamine: Contains nearly 5g of naturally occurring BCAAs and over 4g of Glutamine and Glutamic Acid to accelerate repair and soreness relief.
• Lean Profile: Low in fat, low in sugar, and low in carbs—making it ideal for both cutting phases and clean bulking goals.

Suggested Use Add 1 scoop (approx. 33g) to 10–12 oz of cold water or milk. Shake or blend for 30 seconds until fully dissolved. Drink immediately before bed or between main meals during long fasting intervals.