Gold Standard 100% Casein
by Optimum Nutrition
About This Product
Optimum Nutrition Gold Standard 100% Casein is a premium casein whey protein powder designed to support your fitness and muscle-building goals. Each 33g serving delivers 24g of high-quality protein, representing an impressive 73% protein concentration by weight.
Protein Type: CASEIN
This protein blend combines different types of whey protein to provide both fast and sustained protein release throughout the day.
Advanced Product Analytics
Comprehensive analysis comparing Gold Standard 100% Casein against industry standards and competing products
Basic protein supplement that meets minimum requirements for muscle building.
CASEIN Absorption: Slow, sustained release over 3-4 hours, perfect for overnight recovery.
Complete Amino Acid Profile
BCAA Breakdown
BCAA Distribution
Individual Amounts
This product is 0.2g below the optimal leucine threshold for maximum muscle protein synthesis.
About BCAAs
Branched-Chain Amino Acids (Leucine, Isoleucine, Valine) are the three most important amino acids for muscle protein synthesis. Leucine is the primary trigger, while isoleucine and valine support energy production and recovery.
Note: Complete amino acid profile not available from manufacturer. Showing BCAA data only.
How to read: Values show percentage of optimal levels. 100% represents ideal amino acid content for muscle protein synthesis. Higher values indicate superior amino acid profile.
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Complete Nutritional Analysis
Comprehensive breakdown of macro and micronutrients per 33g serving
Protein Efficiency
With 72.7% protein by weight, this product delivers 20.0% of its calories from protein, making it less efficient for lean muscle building.
Leucine Threshold
Contains 2.3g leucine. Consider taking 1.5 servings to reach optimal 2.5g threshold.
Caloric Density
At 120 calories per 24g of protein, this equals 5.00 calories per gram of protein - excellent for cutting phases.
Complete Product Analysis
- Low fat content (1g) ideal for lean muscle gains
- Low carbohydrate content (3g) suitable for low-carb diets
- Established brand with quality control standards
- Protein concentration (73%) below premium isolate standards
- Leucine content (2.3g) below optimal threshold for MPS
- Higher sodium content (190mg) may be a concern for some
- No third-party testing certification available
- Limited amino acid profile data from manufacturer
Take 1 serving upon waking to break the overnight fast and kickstart muscle protein synthesis. Mix with water for faster absorption or milk for additional calories.
Consume within 30-60 minutes after training to optimize recovery. The 2.3 leucine content helps trigger muscle repair and growth.
Ideal for overnight muscle recovery due to slow digestion.
The Science Behind CASEIN Protein
Research-Backed Benefits
Scientific studies have consistently shown that whey protein supplementation, particularly casein, can significantly enhance muscle protein synthesis when combined with resistance training. The high biological value and rapid absorption rate make it superior to many other protein sources.
- Muscle Growth:Studies show 20-25g of whey protein maximally stimulates muscle protein synthesis in most adults.
- Recovery:Whey protein reduces muscle damage markers and accelerates recovery between training sessions.
- Body Composition:Regular supplementation supports lean mass gains while promoting fat loss when in a caloric deficit.
Optimal Dosing Strategy
Based on current research, consuming 24g of protein per serving from this product falls within the optimal rangefor maximizing muscle protein synthesis. The leucine content of 2.3g approaches the threshold for optimal mTOR activation.
Frequently Asked Questions
The recommended serving is 33g providing 24g of protein. Most adults benefit from 1-2 servings daily, depending on total protein requirements. Athletes may need 2-3 servings to meet their elevated protein needs of 1.6-2.2g per kg of body weight.
Casein protein is ideal before bed due to its slow digestion rate, providing amino acids throughout the night.The 2.3 content makes it particularly effective for stimulating muscle protein synthesis.
Yes, with only 120 calories and 3g of carbs per serving, this protein can support weight loss goals when used as part of a calorie-controlled diet. The high protein content (24g) helps preserve muscle mass during caloric deficit and increases satiety, reducing overall calorie intake.
Gold Standard 100% Casein provides 73% protein by weight, which is comparable to quality protein sources. Chicken breast contains about 31% protein, while this product offers 2.3x the protein concentration. The rapid absorption and complete amino acid profile make it superior to plant-based proteins for muscle building.
This protein is generally safe for most people.Start with half a serving to assess tolerance. Stay hydrated and don't exceed recommended daily protein intake. Consult a healthcare provider if you have kidney concerns or allergies.
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