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PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g vs Gold Standard 100% Isolate Protein Strawberry 930g

Side-by-side comparison of scores, ingredients, prices and real customer feedback for PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g and Gold Standard 100% Isolate Protein Strawberry 930g.

Last verified: 07 Apr 2026 · Based on 20 reviews

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81.0
Quick Answer

PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g scores 81.0/100 vs Gold Standard 100% Isolate Protein Strawberry 930g at 80.0/100. PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g wins on ingredient quality, value for money, side effects. Gold Standard 100% Isolate Protein Strawberry 930g is stronger on effectiveness.

How Do the Scores Compare?

PINK SUN Whey Protein Isola...
Gold Standard 100% Isolate ...
PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g
PINK SUN Whey Protein Isola...
PINK SUN
 Gold Standard 100% Isolate Protein Strawberry 930g
Gold Standard 100% Isolate ...
Optimum Nutrition
Overall Score 81.0 80.0
Effectiveness 87.0/100 90.0/100
Best
Ingredient Quality 91.0/100
Best
 80.0/100
Value for Money 71.0/100
Best
 70.0/100
Side Effects 91.0/100
Best
 90.0/100
Certifications 48.0/100
Best
 40.0/100
Best Price £42.95 Amazon UK →
Cheapest
 £55.00 Holland & Barrett →
Form ‎Powder None
Dose None None
Third-Party Tested ✗ No ✗ No
Reviews Analysed 16 4

PINK SUN Whey Protein Isolate Po...

Pros

  • ✓Exceptionally clean formula — no additives, sweeteners, fillers, or artificial ingredients
  • ✓92% protein content with near-zero fat, carbs, and lactose
  • ✓Neutral, unobtrusive flavour makes it highly versatile for cooking and shaking
  • ✓Grass-fed, hormone-free source milk with undenatured processing

Cons

  • ✗No third-party lab certification listed (informed-sport, Labdoor, etc.)
  • ✗Packaging is soft bag format — can be awkward to store upright
  • ✗One reviewer reported clumping and off-smell (isolated complaint but worth noting)
  • ✗Premium price point; international shipping can significantly increase cost

Best For

Clean-eating and wholefood diet followers People sensitive to lactose, soy, or gluten Keto and low-carb dieters Over-50s seeking a light, easily digestible protein source Athletes who prefer to customise flavour themselves Anyone who has experienced GI issues with flavoured or additive-heavy proteins
Amazon UK £42.95
View full review →

Gold Standard 100% Isolate Prote...

Pros

  • ✓Excellent taste and mixability (multiple reviews praise ease of preparation)
  • ✓High protein purity (83% protein, <0.3g sugar, <0.4g fat per serving)
  • ✓Strong BCAA profile (5.5g naturally occurring BCAAs per serving)
  • ✓Reputable brand with decades of research backing and consistent formulation

Cons

  • ✗No third-party testing certification (NSF, Informed Choice, etc.) listed
  • ✗Premium pricing compared to concentrate alternatives
  • ✗Limited flavor variety in some regions
  • ✗Only 4 reviews available for independent verification

Best For

Serious athletes and bodybuilders seeking high protein intake Individuals with lactose intolerance or sensitivity Post-workout recovery and muscle building Those prioritizing low sugar and fat content
Holland & Barrett £55.00
View full review →

What does the data say about PINK SUN Whey Protein ... vs Gold Standard 100% Iso...?

PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g Winner 81.0/100

Pink Sun Whey Protein Isolate is an ultra-filtered, unflavoured isolate delivering 92% protein from grass-fed, hormone-free UK cows, with no additives, sweeteners, soy, gluten, or artificial ingredients.

Effectiveness
PINK SUN Whey Pr..
87.0/100
Gold Standard 10..
90.0/100
Ingredient Quality
PINK SUN Whey Pr..
91.0/100
Gold Standard 10..
80.0/100
Value for Money
PINK SUN Whey Pr..
71.0/100
Gold Standard 10..
70.0/100
Side Effects
PINK SUN Whey Pr..
91.0/100
Gold Standard 10..
90.0/100
Certifications
PINK SUN Whey Pr..
48.0/100
Gold Standard 10..
40.0/100

What are the key differences?

PINK SUN Whey Protein I.. is best for: Clean-eating and wholefood diet followers, People sensitive to lactose, soy, or gluten
Gold Standard 100% Isol.. is best for: Serious athletes and bodybuilders seeking high protein intake, Individuals with lactose intolerance or sensitivity

Frequently Asked Questions

Which is better, PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g or Gold Standard 100% Isolate Protein Strawberry 930g? ▼
PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g scores 81.0/100 overall while Gold Standard 100% Isolate Protein Strawberry 930g scores 80.0/100. PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g comes out ahead, scoring higher on effectiveness (87.0 vs 90.0). PINK SUN Whey Protein Isolate is best suited for Clean-eating and wholefood diet followers and People sensitive to lactose, soy, or gluten. Gold Standard 100% Isolate Pro is better for Serious athletes and bodybuilders seeking high protein intake and Individuals with lactose intolerance or sensitivity.
Is PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g worth the price compared to Gold Standard 100% Isolate Protein Strawberry 930g? ▼
PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g costs £42.95 while Gold Standard 100% Isolate Protein Strawberry 930g is £55.00. For value, PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g scores 71.0/100 vs Gold Standard 100% Isolate Protein Strawberry 930g's 70.0/100. PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g delivers better value relative to its quality.
Which has fewer side effects? ▼
PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g scores 91.0/100 for side effects (higher means fewer reported issues) while Gold Standard 100% Isolate Protein Strawberry 930g scores 90.0/100. Reviewers report fewer side effects with PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g. For certification and testing, PINK SUN Whey Protei scores 48.0/100 vs Gold Standard 100% I's 40.0/100. Always consult a healthcare professional before starting any supplement.

Related Product Comparisons

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Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg

vs PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g
VS

Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg

vs Gold Standard 100% Isolate Protein Strawberry 930g
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

vs PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g
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

vs Gold Standard 100% Isolate Protein Strawberry 930g
VS

Dymatize ISO100 Hydrolyzed Whey Protein Isolate 2.2kg

vs PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g
VS

Dymatize ISO100 Hydrolyzed Whey Protein Isolate 2.2kg

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What the Data Says

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

Fewer ingredients = cleaner protein. We scored 169 whey proteins on ingredient quality (IQ) and the gap between top and bottom is massive: 65 points, from 95/100 down to 30/100.

The top 7 products by IQ all share one trait — minimal ingredient lists:

  • PINK SUN Organic Whey Concentrate — IQ 95, overall 85
  • Isopure Unflavoured Whey Isolate — IQ 91, overall 76
  • LEGION Whey+ Isolate — IQ 91, overall 80
  • PINK SUN Whey Isolate Unflavoured — IQ 91, overall 81
  • Purition 100% Whey Isolate 93% Protein — IQ 91, overall 80
  • Dymatize ISO100 — IQ 90, overall 84
  • Naked Whey (1 ingredient) — IQ 90, overall 74

The bottom tells the opposite story. Products like BodyFuel Clear Protein (IQ 30), Amfit Nutrition (IQ 38), and Protein Dynamix 3XP (IQ 38) use multi-source protein blends padded with artificial sweeteners, thickeners, and colourings.

The average across all 169 products is 70.7/100. If your whey protein has more than 5-6 ingredients, check what's filling up that list. A clean whey needs protein, maybe a natural flavour, and not much else.

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

Cheap whey often causes bloating because of what's added to the protein, not the protein itself. We scored 169 whey proteins and the worst-scoring products share the same filler-heavy ingredient profiles.

Three categories of additives show up repeatedly in low-IQ products (scored 30-42):

  • Thickeners — xanthan gum, carrageenan, cellulose gum. These bulk up texture but can cause gas and bloating in sensitive stomachs.
  • Artificial sweeteners — sucralose, acesulfame-K, aspartame. Linked to gut microbiome disruption in some studies. Budget brands use these heavily.
  • Anti-caking agents and emulsifiers — added to improve mixability, but another source of digestive irritation.

Products like BodyFuel Clear Protein (IQ 30), Amfit Nutrition (IQ 38), and SCI-MX Ultra Muscle (IQ 42) stack several of these additives together.

Compare that to the top scorers: PINK SUN Organic Whey (IQ 95) and Naked Whey (IQ 90) use 1-3 ingredients total. No thickeners, no artificial sweeteners, no fillers. Users report far less digestive trouble with these minimal formulas.

Label check shortcut: flip the tub over. If the ingredient list has more than 6 items, or you spot carrageenan, sucralose, or acesulfame-K, that's your likely bloating culprit. A whey isolate with a short list costs a bit more but your gut will thank you.

Disclaimer: AIScored provides data-driven comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.

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