Optimum Nutrition - Gold Standard 100% Isolate
Optimum Nutrition - Gold Standard 100% Isolate
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Optimum Nutrition - Gold Standard 100% Isolate

4.7 stars out of 581 reviews
(4.7)|
581 ratings
Optimum Nutrition - Gold Standard 100% IsolateOptimum Nutrition Gold Standard 100 Isolate Rich Vanilla 1 58 lb 720 gOptimum Nutrition 100 Whey Gold Standard Protein Isolate Powder Rich Vanilla 2 91 lbsOptimum Nutrition 100 Whey Gold Standard Protein Isolate Powder Chocolate Bliss 3 lbs

Key item features

  • Ultra-Filtered Whey Protein Isolate
  • 25 g Protein - Helps Build* and Maintain Muscles
  • 5.5 g BCAAs** - Supports Endurance and Recovery
  • For Muscle Support and Recovery
  • Artificially Flavored
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Customer ratings & reviews

4.7 out of 5 stars
stars581 ratings548 reviews
How item rating is calculated
  1. 5 stars84% (489)
  2. 4 stars10% (58)
  3. 3 stars3% (17)
  4. 2 stars1% (7)
  5. 1 star2% (10)

Reviews summary

Pros
  • : Has a deep and velvety taste experience.
  • : Made with premium protein and ingredients.
  • : Creates a smooth texture when mixed with liquids.
  • : Product has a large serving capacity.
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Showing 1-3 of 548 reviews

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?4Q6S7BQAEEAX624193462
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?4Q6S7BQAEEAX624193462
Dec 3, 2024
iHerb customer
5 out of 5 stars review

Excellent!

Really simple to make and blends without clumps. It tastes good. It is low in calories and is a protein with many grams of protein per serving. I get the vanilla so I can add in flavours if I get bored like cinnamon powder, cocoa powder etc. This is a high quality protein.

Incentivized Review
Review from iherb.com
Helpful?4Q6S7BQAEEAX624193462