With the Optimum Nutrition Gold Standard 100% Isolate, Optimum Nutrition aims to offer quality nutrition that fits your lifestyle.
If you're serious about hitting your protein goals, this one deserves a closer look.
Optimum Nutrition's whey protein.
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.
A premium-tier product for those willing to invest in top-shelf formulations.
Available at $74.98 — a competitive price point for the US market.
If Optimum Nutrition is a brand you trust, this product reinforces that confidence.
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.
Track how the price has changed over the last 90 days on Amazon.com.
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 | Optimum Nutrition | Ensure | Orgain | |
|---|---|---|---|---|
| Price | $74.98 | $35.99 | $27.97 | $29.97 |
| Per Serving | - | - | - | - |
| Servings | — | — | — | — |
| Lab Tested | ✓ | ✓ | ✓ | ✓ |
| Rating | 4.6 ★ | 4.6 ★ | 4.6 ★ | 4.5 ★ |
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.
Optimum Nutrition
Optimum Nutrition Gold Standard 100% Whey Protein Powder, Double Rich Chocolate 1.98 Pound (Packaging May Vary)
Ensure
Ensure Max Protein Shake | Milk Chocolate | Ready to Drink | 30g Protein for Muscle Health | 1g Sugar, 4g Fiber | 11 fl oz, 12 Pack
Orgain
Orgain Organic Vegan Protein Powder, Vanilla Bean - 21g Plant Protein, 6g Prebiotic Fiber, No Lactose Ingredients, No Added Sugar, Non-GMO, For Shakes & Smoothies, 2.03 lb (Packaging May Vary)
Clean Simple Eats
Clean Simple Eats Whey Protein Powder, Variety Pack, Naturally Sweetened Flavors, 100% Grass Fed Protein Powder with Digestive Enzymes & No Artificial Ingredients, Gluten Free, 10 Single Serve Packs
In-depth guides and articles to help you make a more informed choice.
Best Whey Protein Powder 2026 — Top Picks Ranked by Price Per Serving
ON Gold Standard, Dymatize ISO100, Transparent Labs, and Ghost Whey compared. Third-party tested picks at every budget — from $0.80 to $2.00 per serving.
10 min read
Buying GuideBest Whey Protein Isolate 2026 — Low-Lactose Picks for Sensitive Stomachs
Dymatize ISO100, Ascent Native Fuel, and Isopure compared. When you need isolate over concentrate, and which NSF-certified options deliver the best value.
8 min read
