Price History (90 days)
Quick Facts
- Form
- Powder
- Dose
- 24g protein per 33g serving
- Serving
- 1 scoop (33g)
- Servings
- 55
- Vegan
- No
- Made in
- USA
Optimum Nutrition Gold Standard 100% Casein 1.82kg
by Optimum Nutrition
A slow-release micellar casein protein designed for sustained amino acid delivery, typically consumed before bed. Each serving provides 24g of protein that digests over 6-8 hours, helping to reduce overnight muscle breakdown. The thick, pudding-like texture when mixed with less water makes it a popular choice as a high-protein dessert. Chocolate Supreme is the flagship flavour.
AI Review Summary
ON Gold Standard Casein delivers what it promises — a slow-digesting micellar casein that provides sustained protein delivery, typically used before bed. The thick, pudding-like texture is a standout feature that many consumers enjoy as a high-protein dessert. At 24g protein per serving with a solid amino acid profile, it matches ON's whey for nutritional quality. However, the ingredient list is notably more complex than their whey product, with four different thickeners including carrageenan. Whether casein before bed provides meaningful benefits beyond simply meeting daily protein targets remains scientifically debated.
Pros
- +Thick pudding-like texture doubles as a satisfying snack
- +Slow-release protein over 6-8 hours
- +24g protein with strong amino acid profile
- +Informed Choice certified
Cons
- -Multiple thickeners including controversial carrageenan
- -Harder to mix than standard whey
- -Scientific benefit over hitting total daily protein is debated
Best For
Watch Out
- !Contains carrageenan — check if this concerns you
Ingredients & Composition
Active Ingredients
- Protein
- 24g per serving
- BCAAs
- 4.7g per serving
- Glutamine & Glutamic Acid
- 4.8g per serving
Other Ingredients
Micellar Casein (Milk), Cocoa Powder, Sunflower Creamer, Natural & Artificial Flavours, Cellulose Gum, Carrageenan, Guar Gum, Xanthan Gum, Soy Lecithin, Acesulfame Potassium, Sucralose
Clean Label Analysis
Contains multiple thickeners (cellulose gum, carrageenan, guar gum, xanthan gum) which contribute to the thick texture but represent a more complex additive profile than a standard whey. Carrageenan in particular is controversial despite being generally recognised as safe.
Quality & Testing
Third-Party Tested
This product has been independently tested by third-party laboratories for purity, potency, and safety.
Certifications
Additional Specifications
- Type
- Sports
- Form
- Powder
- Dose
- 24g protein per 33g serving
- Serving Size
- 1 scoop (33g)
- Protein Per Serving
- 24g
- Calories Per Serving
- 120 kcal
- Protein Source
- Micellar Casein
- Fillers Analysis
- Contains multiple thickeners (cellulose gum, carrageenan, guar gum, xanthan gum) which contribute to the thick texture but represent a more complex additive profile than a standard whey. Carrageenan in particular is controversial despite being generally recognised as safe.
- Allergens
- Contains: milk, soy. Free from: gluten
- Made In
- USA
How We Score Supplements
Our AI analyses reviews from Reddit, Amazon, YouTube, and specialist forums, then scores each product on a 1-10 scale across six evidence-based categories:
Effectiveness
How well the product delivers its claimed benefits, based on aggregated user experiences.
Ingredient Quality
Bioavailable forms, clean label, minimal fillers, no artificial junk. Higher = cleaner.
Value for Money
Price per serving relative to ingredient quality and effectiveness.
Side Effects Profile
Higher score = fewer side effects. 10 means virtually no adverse reactions reported.
Certifications & Testing
Third-party lab testing, GMP certification, and independent quality verification.
Overall Score
Weighted combination of all factors. Our bottom-line recommendation.
Disclaimer: AIScored provides AI-generated summaries based on publicly available reviews and product information. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Affiliate links may earn us a commission at no extra cost to you.