Brand dossier
Optimum Nutrition
Glanbia Performance Nutrition brand with an official India storefront. Gold Standard 100% Whey (India) has Informed Choice batch listings — verify the tub batch ID on the LGC registry.
- Evidence confidence is 43%; single-source coverage is capped at 60%, so corroboration is still limited.
- Limited corroboration keeps scores away from extremes under the current evidence prior.
Evidence confidence
43%
Published products
12
Model
v2.2
Latest verified
20/7/2026
How this brand score is computed
Assessment transparency
Model v2.2: avoid requires sourced critical/negative risk evidence; caution is for material unresolved warnings; under-reviewed brands without allegations stay pending rather than caution.
Final
67/100
Support
1
Warning
0
Critical
0
Confidence 43% · Net sourced impact +20
Calculation steps
50 + 50 × (support − risk) / (support + risk + 40)
Support weight 20 · Risk weight 0 · Evidence prior 40
Base prior
Neutral starting point before sourced evidence
50
Evidence adjustment
50 × (20 − 0) / (20 + 0 + 40)
+17
Final assessment
Published brand score from the snapshot formula
67/100
testing
Informed Choice listing (India Gold Standard)
+20
Why not 100
- Evidence confidence is 43%; single-source coverage is capped at 60%, so corroboration is still limited.
- Limited corroboration keeps scores away from extremes under the current evidence prior.
Brand evidence ledger
Sourced support, warnings, and critical findings for this brand. Missing evidence stays missing.
Product assessment
67 / 100
Mixed
Testing
Informed Choice listing (India Gold Standard)
LGC Informed Choice lists Optimum Nutrition Gold Standard 100% Whey (India) with searchable certified batches.
Evidence confidence 43%
Assessment 67 / 100
Reviewed products
12 in catalog

Optimum Nutrition (ON) Gold Standard Whey Protein Powder - 2.27 kg (5 lb), Rocky Road
₹7,006 · 76% protein · 60% evidence
Assessment
91

Optimum Nutrition (ON) Gold Standard Whey Protein Powder - 1.7 kg (3.7 lb), Double Rich Chocolate
₹7,599 · 79% protein · 60% evidence
Assessment
90

Optimum Nutrition (ON) Gold Standard Whey Protein Powder - 907 g (2 lb), Extreme Milk Chocolate
₹3,478 · 75% protein · 60% evidence
Assessment
86

Optimum Nutrition (ON) Gold Standard Whey Protein Powder - 907 g (2 lb), Double Rich Chocolate
₹4,349 · 79% protein · 60% evidence
Assessment
86

Optimum Nutrition (ON) Gold Standard Whey Protein Powder - 907 g (2 lb), Unflavoured
₹4,899 · 81% protein · 60% evidence
Assessment
86

Optimum Nutrition (ON) Gold Standard Whey Protein Powder - 907 g (2 lb), Mocha Cappuccino
₹3,478 · 75% protein · 60% evidence
Assessment
86

Optimum Nutrition (ON) Gold Standard Whey Protein Powder - 454 g (1 lb), Vanilla Ice Cream
₹2,349 · 77% protein · 60% evidence
Assessment
85

Optimum Nutrition (ON) Gold Standard Whey Protein Powder - 907 g (2 lb), Alphonso Mango
₹4,559 · 77% protein · 60% evidence
Assessment
85

Optimum Nutrition (ON) Gold Standard Whey Protein Powder - 454 g (1 lb), Double Rich Chocolate
₹2,349 · 77% protein · 60% evidence
Assessment
85

Optimum Nutrition (ON) Gold Standard Whey Protein Powder - 2.27 kg (5 lb), Cookies & Cream
₹7,639 · 73% protein · 60% evidence
Assessment
83

Optimum Nutrition (ON) Gold Standard Whey Protein Powder - 907 g (2 lb), Cookies & Cream
₹3,478 · 73% protein · 60% evidence
Assessment
83

Optimum Nutrition Performance Whey - 1 kg, Chocolate
₹3,499 · 65% protein · 60% evidence
Assessment
59