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Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg vs PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK

Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg vs PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK

Q: What makes a clean whey protein? Ingredient quality scores across 169 UK products

We scored 169 whey protein products on ingredient quality (IQ) and found a 65-point gap between the best and worst: 95/100 (PINK SUN Organic Whey Concentrate) down to 30/100 (BodyFuel Clear Protein). The average sits at 70.7/100. The pattern is simple: single-ingredient or minimal-ingredient formulas dominate the top. PINK SUN, Isopure Unflavoured, LEGION Whey+, and Naked Whey all keep their ingredient lists short and score IQ 90+. The bottom is filled with multi-blend formulas loaded with artificial sweeteners, thickeners, and colourings — Amfit Nutrition (IQ 38), Protein Dynamix 3XP (IQ 38), and Bulk Basic Whey (IQ 42) all follow this pattern.

Q: Can cheap whey protein cause bloating? What to check on the label

Yes, and the ingredient list usually explains why. Among the 169 whey proteins we scored, the lowest-quality products (IQ 30-42) are packed with thickeners like xanthan gum and carrageenan, artificial sweeteners like sucralose and acesulfame-K, and anti-caking agents. These additives are common triggers for bloating, gas, and gut discomfort. Products like Amfit Nutrition (IQ 38) and Bulk Basic Whey (IQ 42) use several of these. The fix: pick a whey isolate with a short ingredient list. The top-scoring products (IQ 90-95) typically have 1-3 ingredients and avoid these fillers entirely.

Side-by-side comparison of scores, ingredients, prices and real customer feedback for Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg and PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK.

Last verified: 07 Apr 2026 · Based on 23 reviews

Back to comparison hub View whey protein guide

85.0

Quick Answer

Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg scores 85.0/100 vs PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK at 85.0/100. Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg wins on effectiveness, value for money, certifications. PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK is stronger on ingredient quality and side effects.

How Do the Scores Compare?

Optimum Nutrition Gold Stan...

PINK SUN Organic Whey Prote...

	Optimum Nutrition Gold Stan... Optimum Nutrition	PINK SUN Organic Whey Prote... PINK SUN
Overall Score	85.0	85.0
Effectiveness	87.0/100 Best	78.0/100
Ingredient Quality	80.0/100	95.0/100 Best
Value for Money	82.0/100 Best	75.0/100
Side Effects	83.0/100	91.0/100 Best
Certifications	90.0/100 Best	88.0/100
Best Price	£75.99 Amazon UK →	£36.95 Amazon UK → Cheapest
Price per Serving	£1.03 74 servings	N/A
Form	Powder	‎Powder
Dose	24g protein per 30.4g serving	None
Third-Party Tested	✓ Yes	✗ No
Reviews Analysed	11	12

Optimum Nutrition Gold Standard ...

Pros

✓Consistently praised taste and mixability across multiple reviewers
✓Whey Protein Isolate listed as primary source — higher protein purity than concentrate-led formulas
✓Informed Choice and Banned Substance Tested certifications provide confidence for athletes
✓Strong value for money at 74 servings per 2.27 kg tub

Cons

✗Contains artificial sweeteners (sucralose and acesulfame potassium) which some consumers prefer to avoid
✗Not suitable for those with milk or soy allergies due to whey and soy lecithin content
✗Holland & Barrett reviews skew heavily 5-star, offering limited critical perspective
✗Customer service quality flagged as poor in at least one verified Trustpilot complaint

Best For

Gym-goers and recreational athletes seeking reliable post-workout protein Long-term supplement users who value brand consistency Anyone prioritising third-party tested products for sport compliance Those who want a widely available, flavour-tested product with proven palatability

Amazon UK £75.99

View full review →

PINK SUN Organic Whey Protein Co...

Pros

✓Soil Association certified organic with verifiable grass-fed, hormone-free sourcing
✓Genuinely pure formula — no additives, sweeteners, flavourings, fillers, or artificial anything
✓Undenatured whey preserves immunoglobulins, lactoferrin, and bioactive peptides
✓Exceptional digestibility — multiple users with IBS, eczema, or additive sensitivities report zero issues

Cons

✗80% protein content is solid but slightly lower than some non-organic or isolate alternatives
✗Resealable bag closure reported as fiddly and unreliable for long-term freshness
✗Faint cheesy or milky aftertaste noted by at least one reviewer
✗No scoop included — first-time buyers need to source one separately

Best For

health-conscious consumers prioritising clean, additive-free protein individuals with additive sensitivities, eczema, IBS, or digestive issues athletes and fitness professionals demanding certified organic sourcing wholefood and vegetarian dieters avoiding artificial ingredients home cooks wanting a neutral protein base for smoothies or cooking

Amazon UK £36.95

View full review →

What does the data say about Optimum Nutrition Gold... vs PINK SUN Organic Whey ...?

Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg Winner 85.0/100

Optimum Nutrition Gold Standard 100% Whey is widely regarded as an industry benchmark protein powder, with reviewers consistently praising its taste, mixability, and value for money.

Effectiveness

Optimum Nutritio..

87.0/100

PINK SUN Organic..

78.0/100

Ingredient Quality

Optimum Nutritio..

80.0/100

PINK SUN Organic..

95.0/100

Value for Money

Optimum Nutritio..

82.0/100

PINK SUN Organic..

75.0/100

Side Effects

Optimum Nutritio..

83.0/100

PINK SUN Organic..

91.0/100

Certifications

Optimum Nutritio..

90.0/100

PINK SUN Organic..

88.0/100

What are the key differences?

Optimum Nutrition Gold .. is best for: Gym-goers and recreational athletes seeking reliable post-workout protein, Long-term supplement users who value brand consistency

PINK SUN Organic Whey P.. is best for: health-conscious consumers prioritising clean, additive-free protein, individuals with additive sensitivities, eczema, IBS, or digestive issues

Frequently Asked Questions

Which is better, Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg or PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK? ▼

Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg scores 85.0/100 overall while PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK scores 85.0/100. Both score equally overall — the difference comes down to individual dimensions. Optimum Nutrition Gold Standar is best suited for Gym-goers and recreational athletes seeking reliable post-workout protein and Long-term supplement users who value brand consistency. PINK SUN Organic Whey Protein is better for health-conscious consumers prioritising clean, additive-free protein and individuals with additive sensitivities, eczema, IBS, or digestive issues.

Is Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg worth the price compared to PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK? ▼

Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg costs £75.99 while PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK is £36.95. For value, Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg scores 82.0/100 vs PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK's 75.0/100. Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg delivers better value relative to its quality. Note that Optimum Nutrition Go comes as powder while PINK SUN Organic Whe is ‎powder, which may affect your preference.

Which has fewer side effects? ▼

Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg scores 83.0/100 for side effects (higher means fewer reported issues) while PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK scores 91.0/100. Reviewers report fewer side effects with PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK. For certification and testing, Optimum Nutrition Go scores 90.0/100 vs PINK SUN Organic Whe's 88.0/100. Always consult a healthcare professional before starting any supplement.