Optimum Nutrition Day & Night Protein Stack
Build Muscle Throughout The Day & While You Sleep
Optimum Gold Standard 100% Whey
Whey protein is popular with active adults because it digests rapidly and is a rich source of amino acids to support muscle recovery.* Whey protein isolates are the purest form of whey and the primary ingredient in Gold Standard 100% Whey. Each serving provides 24 grams of rapidly digesting whey protein with low levels of fat, cholesterol, lactose and other stuff you can do without. There's no doubt this is the standard all other proteins are measured against.
- Packed with Whey Protein Isolates
- Provides Whey Protein Microfractions
- More than 5 Grams of BCAAs
- Over 4 Grams of Glutamine & Glutamic Acid
- Instantized to Mix with a Spoon
Optimum Gold Standard 100% Casein
Faster digesting amino acids are desirable immediately before and after exercise to help refuel recovering muscles, but slow digestion and absorption may be more beneficial at other times – including bedtime when your body typically goes for hours without food.*
Casein proteins are acid sensitive and thicken in the stomach. Compared to some other proteins, it can take more than twice as long for Gold Standard 100% Casein to be broken down into its amino acid subcomponents. By using only premium micellar casein as a protein source, ON has created a formula that sets the standard for slow digesting protein support.