Optimum Nutrition Gold Standard 100% Casein is a slow-digesting protein, perfect for nighttime use or between meals. It delivers a steady stream of amino acids, helping preserve and rebuild muscle mass overnight.

Product Benefits

24g of micellar casein per serving

Slow protein release — up to 7 hours

Delicious cookies & cream flavor

Only 1g of sugar and 0g trans fats

Supports anti-catabolic muscle protection

Convenient 1.75 kg tub — around 50 servings

Who is it for?

Athletes and bodybuilders in recovery and bulking phases

People needing protein before bed

Individuals with irregular meal schedules

Men and women looking to maintain muscle mass

Why choose it?

Slow protein absorption — ideal for sleep

Globally recognized, trusted brand

Excellent mixability and taste

Balanced formula with no unnecessary calories

Supports muscle growth during rest