Optimum Nutrition Gold Standard 100% Casein is the World’s No. 1 and the industry’s first all-micellar Casein.
- Slowly digested casein for round the clock protein coverage
- Slower-Digesting Protein Powder
- Protein Supports Muscle Growth and Maintenance
- 24 g of Pure Micellar Casein but just 0.5 g of fat and no added sugars
- Enjoy before bed to support muscle growth while you rest