Optimum Nutrition - Gold Standard 100% Casein

Optimum Nutrition’s 100% Casein offers athletes a highly effective, slow-digesting protein, perfect for overnight/long-term muscle recovery.


Free US Delivery! (Contiguous) Orders arrive within 3-8 business days.


Optimum Nutrition’s Gold Standard 100% Casein delivers slow digesting and absorbing, premium micellar casein, alongside BCAAs, to recovering muscles in your body over several hours; helping to fuel long-term muscle recovery. Gold Standard 100% Casein contains 24 grams of casein protein, branched-chain amino acids, only 1 gram of sugar, and has a Grade A rating on Labdoor.


Premium Micellar Casein / 24 grams

Naturally Occurring BCAAs / nearly 5 grams

Only 110-120 Calories

Minimal fat content / 0.5-1 gram(s)

Minimal sugar content / 1 gram


United States:

Free Shipping on all orders within the contiguous US

Customer Support with regular updates

Delivery time: 3-8 business days

International Shipping:

Affordable shipping rates based on item size (calculated at checkout)

Customer Support with regular updates

Delivery time: 5-14 business days (estimate)

Quick/Free US Delivery*

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