Optimum Nutrition Gold Standard® 100% Casein Protein delivers 24 grams of premium micellar casein protein per serving to support muscle recovery, maintenance, and growth during extended periods without food. Because micellar casein digests significantly slower than whey protein, it provides a sustained release of amino acids over several hours, making it an ideal choice before bedtime or between meals.
Each serving supplies 9 grams of naturally occurring essential amino acids (EAAs) along with magnesium and zinc to support active lifestyles and recovery goals. With a rich, satisfying texture, easy mixability, and great taste, Gold Standard® 100% Casein is a convenient way to keep high-quality protein available when your body needs it most.
Highlights
- 24g of protein per serving
- 100% of protein sourced from micellar casein
- Slow-digesting protein for sustained amino acid delivery
- 9g naturally occurring EAAs per serving
- Excellent source of magnesium and zinc
- Supports overnight recovery and between-meal nutrition
- Banned substance tested
Key Benefits
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Overnight Recovery Support: Provides a sustained release of amino acids while you sleep to help support muscle recovery and maintenance.
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Slow-Release Protein: Micellar casein digests more slowly than whey protein, helping provide protein over an extended period.
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Between-Meal Nutrition: Helps bridge longer gaps between meals and support daily protein intake goals.
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Muscle Support: Delivers essential amino acids that help support muscle repair and protein synthesis.
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Mineral Support: Provides magnesium and zinc to support overall wellness and active lifestyles.
Why Choose Micellar Casein?
Slow Digestion Rate: Unlike whey protein, micellar casein forms a gel-like structure in the stomach that digests gradually, allowing for a slower release of amino acids.
Extended Amino Acid Delivery: Helps provide nutritional support during times when eating is not possible or practical, such as overnight or between meals.
Ideal Before Bed: One of the most popular protein options for nighttime use due to its prolonged digestion profile.
Ingredient Highlights
Micellar Casein Protein: A premium milk-derived protein that provides all essential amino acids and supports sustained protein delivery.
Essential Amino Acids (EAAs): Supplies 9g of naturally occurring EAAs to help support muscle recovery and growth.
Magnesium: An essential mineral involved in muscle function and energy metabolism.
Zinc: Supports immune health, recovery, and normal metabolic function.
What Makes It Different
100% Micellar Casein: All protein comes exclusively from micellar casein with no whey protein blends.
Gold Standard® Quality: From one of the most recognized and trusted names in sports nutrition.
Low Fat & Sugar: Contains only 0.5–1g fat and 1–2g sugar per serving, depending on flavor.
Easy Mixing: Mixes easily with a spoon, shaker cup, or blender.
Supplement Facts Highlights
- 24g protein per serving
- 9g naturally occurring EAAs
- 85mg magnesium per serving
- 11mg zinc per serving
- 0.5–1g fat per serving
- 1–2g sugar per serving
Suggested Use
Mix 1 scoop (33–34g) with 8–14 fl oz of cold water, milk, or your favorite beverage. Stir, shake, or blend until fully dissolved.
For Best Results: Consume 30–60 minutes before bedtime or anytime between meals to help support daily protein intake.
Consistency Guide:
- 8–10 oz liquid for a thicker shake
- 12–14 oz liquid for a thinner shake
Who It's For
- Athletes and active individuals
- People looking for a slow-digesting protein source
- Individuals seeking overnight recovery support
- Anyone wanting to increase daily protein intake between meals
FAQs
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What is micellar casein?
Micellar casein is a slow-digesting milk protein that provides a sustained release of amino acids over several hours.
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When is the best time to take casein protein?
Many people take it before bed or between meals when they expect to go several hours without eating.
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How does casein differ from whey protein?
Casein digests more slowly than whey, making it ideal for prolonged amino acid delivery.
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Can I use it during the day?
Yes, it can be used anytime you want a slow-digesting protein source, including between meals.
Note: This product is intended to support muscle recovery, protein intake, and active lifestyles as part of a balanced diet and exercise program. Always review the product label for the most accurate ingredient, usage, and safety information.