Optimum Nutrition Gold Standard 100% Isolate, Protein Powder, Rich Vanilla, 2.91 Pounds, 44 Servings. Whey Protein Isolate (Packaging May Vary)
Optimum Nutrition Gold Standard 100% Isolate, Protein Powder, Rich Vanilla, 2.91 Pounds, 44 Servings. Whey Protein Isolate (Packaging May Vary)
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Optimum Nutrition Gold Standard 100% Isolate, Protein Powder, Rich Vanilla, 2.91 Pounds, 44 Servings. Whey Protein Isolate (Packaging May Vary)

Key item features

  • High Quality Hydrolyzed & Ultra-Filtered Whey Protein Isolate
  • 25 Grams of Protein Per Serving
  • 5.5 Grams of Naturally Occurring BCAAs per Serving
  • 1 Gram of Carbohydrates Per Serving
  • Banned Substance Tested
Current price is $79.99
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4.680463952695019 stars out of 5, based on 13232 seller reviews(4.7)
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Customer ratings & reviews

4.6 out of 5 stars
stars599 ratings549 reviews
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Pros

  • : Has a balanced and smooth taste profile.
  • : Mixes with minimal effort and no clumping.
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Showing 1-3 of 549 reviews

Mar 22, 2026
MELLOSMOOTHE
Item details
Flavor: Unflavored
Size: 2.91 lbs
Sold and shipped byiHerb
5 out of 5 stars review

Verified Purchase

A great product which I've been using for years.

If your on a low carb diet like me then Optimum gold standards is the protien powder for you. Have been using Optimum products for years and have gotten huge results. I'm dropping my weight so I can build more muscle mass.

Helpful?4Q6S7BQAEEAX154905832
May 23, 2025
Jenn A.
5 out of 5 stars review

Seller Verified Purchase

I Keep Coming Back to This One

I've been using Optimum Nutrition protein powder for many years now, and it's the one product I consistently come back to. Over time, I've tried a variety of brands and blends, but nothing matches the reliability, taste, and quality that ON delivers. More importantly, it's always been effective. It helps support my recovery after workouts, fits seamlessly into my daily routine, and I genuinely notice the difference when I'm using it regularly. The consistency in quality over the years is what really sets it apart. Highly recommend to anyone from beginners to experienced lifters. It's a staple in my fitness journey, and I don't see that changing anytime soon.

Review from optimumnutrition.com
Helpful?4Q6S7BQAEEAX154905832
Nov 16, 2024
iHerb customer
5 out of 5 stars review

Favorite protein

This protein does not make me feel bloated! I started taking protein as I'm hitting the gym more frequently for both lifting and cardio. I bought both chocolate and vanilla and vanilla is definitely my favorite. Mixes easily and tastes so good it almost feels like a treat.

Incentivized Review
Review from iherb.com
Helpful?4Q6S7BQAEEAX154905832