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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 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g

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 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g.

Last verified: 07 Apr 2026 · Based on 28 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 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g 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 effectiveness, value for money, side effects.

How Do the Scores Compare?

PINK SUN Whey Protein Isola...
100% Whey Protein 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
 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g
100% Whey Protein Isolate, ...
Purition
Overall Score 81.0 80.0
Effectiveness 87.0/100
Best
 84.0/100
Ingredient Quality 91.0/100
Best
 91.0/100
Best
Value for Money 71.0/100
Best
 68.0/100
Side Effects 91.0/100
Best
 89.0/100
Certifications 48.0/100
Best
 28.0/100
Best Price £42.95 Amazon UK → £26.00 Amazon UK →
Cheapest
Form ‎Powder ‎Powder
Dose None None
Third-Party Tested ✗ No ✗ No
Reviews Analysed 16 12

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 →

100% Whey Protein Isolate, 93% P...

Pros

  • ✓Exceptionally high protein content at 93% — higher than most UK isolates
  • ✓No artificial sweeteners, flavours, or soy — praised by multiple reviewers as a rare combination
  • ✓Excellent digestive tolerance — several reviewers specifically note absence of bloating
  • ✓Near-neutral taste enables seamless mixing into savoury dishes, coffee, matcha, and smoothies

Cons

  • ✗Price per gram is higher than mainstream UK brands like Bulk or Myprotein
  • ✗Only available in 500g (20 servings) — no larger bags for frequent users
  • ✗Contains sunflower lecithin, which may concern strict 'single ingredient' buyers
  • ✗No third-party testing or certification (e.g. Informed Sport)

Best For

Stevia/artificial sweetener avoiders People with soy allergies or intolerances Clean-label and whole-food eaters Dairy-sensitive individuals seeking low-lactose protein Cooks and food-first users who blend protein into meals Those prioritising purity over flavour variety
Amazon UK £26.00
View full review →

What does the data say about PINK SUN Whey Protein ... vs 100% Whey Protein Isol...?

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
100% Whey Protei..
84.0/100
Ingredient Quality
PINK SUN Whey Pr..
91.0/100
100% Whey Protei..
91.0/100
Value for Money
PINK SUN Whey Pr..
71.0/100
100% Whey Protei..
68.0/100
Side Effects
PINK SUN Whey Pr..
91.0/100
100% Whey Protei..
89.0/100
Certifications
PINK SUN Whey Pr..
48.0/100
100% Whey Protei..
28.0/100

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
100% Whey Protein Isola.. is best for: Stevia/artificial sweetener avoiders, People with soy allergies or intolerances

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 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g? ▼
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 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g 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 84.0). PINK SUN Whey Protein Isolate is best suited for Clean-eating and wholefood diet followers and People sensitive to lactose, soy, or gluten. 100% Whey Protein Isolate, 93% is better for Stevia/artificial sweetener avoiders and People with soy allergies or intolerances.
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 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g? ▼
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 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g is £26.00. 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 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g's 68.0/100. 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 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g scores 89.0/100. 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 100% Whey Protein Is's 28.0/100. Always consult a healthcare professional before starting any supplement.

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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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