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OPTIMUM NUTRITION GOLD STANDARD 100% Micellar Casein Protein delivers 24g of protein per serving to support muscle growth and post-workout recovery. 58 servings per pack · Available in chocolate.
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The brand behind this product — their story and what they stand for.
Optimum Nutrition is one of the world's most trusted sports nutrition brands, best known for its Gold Standard whey line sold worldwide.
Understand which fitness goals this product is best suited for.
Muscle Gain
Supports muscle growth and recovery when combined with resistance training and a protein-rich diet.
A quick look at pricing, tier, and how it stacks up against the category average.
Step-by-step usage instructions so you get the most out of every serving.
Mix 1 scoop with 200–300ml of cold water or milk in a shaker bottle.
Shake vigorously for 15–20 seconds until smooth.
Best consumed within 30 minutes after your workout or as a protein-rich snack between meals.
Use cold water for a lighter drink or cold milk for a creamier shake and extra protein.
See how this product compares to similar options in its category.
| This Product | PEScience | Pure Protein | Boost | |
|---|---|---|---|---|
| Price | $117.99 | $14.99 | $22.99 | $23.57 |
| Per Serving | $2.03/serving | $3.00/serving | $1.53/serving | $3.37/serving |
| Protein | 24g | 24g | 24g | 24g |
| Servings | 58 | 5 | 15 | 7 |
| Lab Tested | ✗ | ✗ | ✗ | ✗ |
| Rating | 4.5 ★ | 4.6 ★ | 4.4 ★ | 4.4 ★ |
Common questions about this product — answered clearly and honestly.
Yes, this product is vegetarian-friendly. It does not contain any non-vegetarian ingredients.
As of our last check, this product does not have publicly listed third-party lab testing. Look for brands that offer Trustified, NABL, or Labdoor certifications for verified purity.
Each serving provides 24g of protein. A decent protein hit — suitable for snacking or supplementing your meals.
This product is available in Chocolate. Flavour preferences are personal — chocolate and unflavoured tend to be the most versatile options.
The total pack weight is 1.81kg. With 58 servings, this should last approximately 58 days if you take 1 serving daily.
The most popular time is within 30 minutes post-workout for muscle recovery. However, total daily protein intake matters more than timing. You can also use it as a meal supplement or snack to boost your protein intake anytime.
PEScience
PEScience Select Protein Powder, Chocolate Truffle, 5 Servings
Pure Protein
Pure Protein Whey Powder - High Protein (25 g/scoop), Low Sugar (2 g/scoop), Gluten Free - Fast-Acting Formula, Chocolate, 453g
Boost
Boost JUST Protein Unflavoured Instant Whey Protein Isolate Powder, 227 Grams (Pack of 1) - Packaging May Vary
ALLMAX
ALLMAX AllWhey Classic Whey Protein Powder, Chocolate, 0.9 lb
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