SleepSupplementsSkinDevicesDentalAboutUser Studies
SleepSupplementsSkinDevicesDental

Optimum Nutrition Gold Standard 100% Whey Review

The industry gold standard by volume — 100K+ Amazon reviews, 15+ flavors, enormous market share. Excellent heavy metals results (non-detect in CR 2025 and CLP top 10%). Informed Choice certified. Full

A
M
By Alec & Michael•9 min read
✓ Updated Apr 20263.1/10 Score
Gold Standard 100% Whey

Gold Standard 100% Whey. Our #1 rated protein after testing.

#1 Rated Protein
Gold Standard 100% Whey

Gold Standard 100% Whey

★★★★★3.1 / 10

The industry gold standard by volume — 100K+ Amazon reviews, 15+ flavors, enormous market share. Excellent heavy metals results (non-detect in CR 2025 and CLP top 10%).

Formulation Quality
0
Testing & Transparency
5
$1.06/serving
Detailed Scoring

Evident Ratings

Gold Standard 100% Whey

Based on hands-on testing + review analysis Compared across protein brands

3.1
out of 10
0
5
Price per strip: $1.06/serving
Our Findings

What We Found

What we liked

Third-party tested (Informed Choice)

Our concerns

Contains gums (Cellulose Gum, Xanthan Gum, Carrageenan)

Contains natural flavors

Contains soy lecithin

Uses artificial sweeteners

Our Verdict

The industry gold standard by volume — 100K+ Amazon reviews, 15+ flavors, enormous market share. Excellent heavy metals results (non-detect in CR 2025 and CLP top 10%).

See Best Protein Powder →

Get our latest research

New reviews and sleep science insights — no spam, ever.

Keep Reading

More on Protein

Grass-Fed Whey Protein Isolate
Grass-Fed Whey Protein Isolate
AGN Roots Grass-Fed Whey Protein Isolate Review
Organic Vegan Protein
Organic Vegan Protein
Transparent Labs Organic Vegan Protein Review
USDA Organic Grass-Fed Whey Protein
USDA Organic Grass-Fed Whey Protein
Raw Organic Whey USDA Organic Grass-Fed Whey Protein Review
Gold Standard 100% Whey

Optimum Nutrition

Gold Standard 100% Whey

Independently researched and scored by EvidentHigh confidence

3.1
Overall
Material & Safety
0
Trust & Reputation
2.5
Value & Policy
3
Features
1.3
Firsthand Testing
2.3
Material & Safety
Third-Party Testing
Informed ChoiceVerified
COA Availability
Not availableClaimed
Heavy Metals Testing
Consumer Reports 2025: lead below detection limits (#5 ranked whey). Clean Label Project: top 10% of 150+ products tested (Vanilla Ice Cream flavor).Verified
Clean Label Project
Top 10%Verified
USDA Organic
No
Trust & Reputation
Amazon Rating
4.7 (100,000 reviews)Verified
Amino Acid Profile Disclosed
YesVerified
Red Flags
Settled $1.4M class action (2012) over Aminogen protein spiking allegations. Historical Consumer Reports protein shake (not powder) had 150% of CR lead concern level. Both issues appear resolved. Contains carrageenan.Verified
Value & Policy
Price
~$1.06/serving (5 lb tub)Verified
Price Per Serving
$1.06Verified
Servings Per Container
73Verified
Return Policy
30-day return policy via optimumnutrition.com; supplements require 75% unused; refund to original payment methodClaimed
Subscription
No subscription on brand site; Amazon Subscribe & Save available (~5% off)Claimed
Features
Natural Flavors
Contains: Contains 'Natural and Artificial Flavor'
Gums
Contains: Cellulose Gum, Xanthan Gum, Carrageenan
Soy Lecithin
Contains: Contains soy and/or sunflower lecithin (varies by flavor)
Added Sugar
1g
Sweetener
Sucralose + Acesulfame-KVerified
Protein Source Category
Animal-BasedVerified
Protein Source
Whey BlendVerified
Made In
USAClaimed
GMP Certified
YesVerified
Manufacturing Location
Aurora, Illinois, USAClaimed

Background

Owned by Glanbia Performance Nutrition. Launched in 1986. The best-selling protein powder globally. Gold Standard Whey set the template for the modern protein powder market. Aurora, IL facility is NSF GMP for Sport certified.

Full category comparison

Best Protein Powder →