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Meet the Optimum Nutrition Gold Standard 100% Whey Protein Powder by Optimum Nutrition — a product built with performance in mind.
If you're serious about hitting your protein goals, this one deserves a closer look.
Optimum Nutrition's whey protein delivers 24g protein per serving.
Informed Sport certified, meaning every batch is tested for banned substances and purity.
Can support fat-loss phases by helping maintain adequate protein levels.
Suitable for vegetarians, so you can supplement confidently on a plant-inclusive diet.
Priced competitively, offering solid value without cutting corners on quality.
Typically ranges from $18–$21 — a competitive price point for the US market.
A well-rounded offering from Optimum Nutrition that checks the right boxes for most users.
Track how the price has changed over the last 90 days on Amazon.com.
The brand behind this product — their story and what they stand for.
Trusted American sports nutrition brand since 1986. Gold Standard Whey is the world's best-selling protein powder, backed by decades of quality manufacturing.
Understand which fitness goals this product is best suited for.
Fat Loss
Helps maintain lean muscle during a caloric deficit. Pair with a structured workout and nutrition plan.
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.
Common questions about this product — answered clearly and honestly.
Yes, this product is vegetarian-friendly. It does not contain any non-vegetarian ingredients.
Yes, this product has been lab tested by Informed Sport. Third-party lab testing verifies that the product contains what the label claims, giving you confidence in its quality and purity.
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.
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In-depth guides and articles to help you make a more informed choice.
Best Whey Protein in USA (October 2026) — ON vs Dymatize vs Transparent Labs Ranked | WheySearch
Dymatize Elite 5lb at ~$1.21/serving leads on value. ON Gold Standard for everyday use, ISO100 for isolate, Transparent Labs for clean label. Whey ranked by price per gram of protein. Updated October 2026.
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Dymatize ISO100 5lb at ~$1.45/serving leads on value. Transparent Labs for clean label, Isopure for zero-carb, ON Gold Standard for brand trust. Isolates ranked by price per serving. Updated October 2026.
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