Optimum Nutrition Gold Standard 100% Casein protein makes up 80% of milk proteins as its digestion and absorption is much slower than that of any type of protein, and the amino acid composition helps build muscle and inhibits muscle wasting for long hours and leads to increased strength in Gym and muscle recovery speed after exercise.
The best time to take casein is at bedtime, long periods of time athletes go without pills, and during periods of fasting.
Features of Optimum Nutrition Gold Standard 100% Casein
Helps build muscle
Preserve muscle from wasting
Increase strength during exercise 
Free of artificial flavors
Free of artificial sweeteners and colors
Rich in BCAAs
Contains digestive enzymes to improve protein digestion.
 
MADE IN UNITED STATES