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Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g vs Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Powder

Side-by-side comparison of scores, ingredients, prices and real customer feedback for Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g and Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Powder.

Last verified: 07 Apr 2026 · Based on 28 reviews

82.0
Quick Answer

Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g scores 82.0/100 vs Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Powder at 80.0/100. Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g wins on value for money, side effects. Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Powder is stronger on effectiveness and ingredient quality.

How Do the Scores Compare?

Optimum Nutrition Gold Stan...
Dymatize ISO 100 Hydrolyzed...
Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g
Optimum Nutrition Gold Stan...
Optimum Nutrition
Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Powder
Dymatize ISO 100 Hydrolyzed...
Dymatize
Overall Score 82.0 80.0
Effectiveness 83.0/100 84.0/100
Best
Ingredient Quality 86.0/100 87.0/100
Best
Value for Money 74.0/100
Best
69.0/100
Side Effects 89.0/100
Best
74.0/100
Certifications 78.0/100 80.0/100
Best
Best Price £31.72 Amazon UK →
Cheapest
£41.10 Amazon UK →
Form Powder ‎Powder
Dose None None
Third-Party Tested ✗ No ✗ No
Reviews Analysed 17 11

Optimum Nutrition Gold Standard ...

Pros

  • Industry-leading mixability — dissolves cleanly in water with minimal clumping, even without a blender
  • High protein yield (~24g per serving) with low fat and sugar content, suitable for calorie-controlled diets
  • Consistently reported improvements in muscle recovery and reduced post-workout soreness
  • Whey protein isolate as primary ingredient ensures high purity and lower lactose versus concentrate-based alternatives

Cons

  • Flavour quality is inconsistent — some variants (double chocolate) rated too sweet, and one reviewer noted a batch tasting 'off'
  • French Vanilla Creme described as slightly bland when mixed with water; better suited to milk
  • Occasional fulfilment issues reported (missing scoop, container appearing half-filled)
  • Contains fish and milk allergens — unsuitable for those with relevant sensitivities

Best For

Regular gym-goers and athletes seeking post-workout recovery People on calorie-controlled or high-protein diets Those managing blood sugar who need a low-sugar protein source Beginners looking for a reliable, well-established brand Users who prioritise mixability and daily drinkability
View full review →

Dymatize ISO 100 Hydrolyzed Gour...

Pros

  • Fast absorption due to hydrolysis — amino acids reach muscles quicker than standard whey concentrate or isolate
  • Excellent taste and mixability — mixes cleanly in a shaker without clumping, rich chocolate flavour
  • Very high protein density: 25g per serving, under 116 kcal, negligible fat and sugar
  • Informed Choice certified — independently batch-tested for banned substances

Cons

  • Taste noticeably weaker when mixed with water compared to milk
  • Described as overly sweet by some — not ideal for those sensitive to sweetness
  • Contains allergens: milk, peanuts, and hazelnuts — unsuitable for those with nut allergies
  • Premium price point relative to standard whey concentrates or non-hydrolyzed isolates

Best For

Serious athletes prioritising fast post-workout recovery Those with lactose sensitivity seeking a cleaner protein source Body composition-focused users tracking calories tightly Competitive athletes requiring banned-substance tested products
View full review →

What does the data say about Optimum Nutrition Gold... vs Dymatize ISO 100 Hydro...?

Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g Winner 82.0/100

Optimum Nutrition Gold Standard 100% Whey is the world's best-selling whey protein, built around whey protein isolate as its primary ingredient for high purity and fast absorption.

Effectiveness
Optimum Nutritio..
83.0/100
Dymatize ISO 100..
84.0/100
Ingredient Quality
Optimum Nutritio..
86.0/100
Dymatize ISO 100..
87.0/100
Value for Money
Optimum Nutritio..
74.0/100
Dymatize ISO 100..
69.0/100
Side Effects
Optimum Nutritio..
89.0/100
Dymatize ISO 100..
74.0/100
Certifications
Optimum Nutritio..
78.0/100
Dymatize ISO 100..
80.0/100

What are the key differences?

Optimum Nutrition Gold .. is best for: Regular gym-goers and athletes seeking post-workout recovery, People on calorie-controlled or high-protein diets
Dymatize ISO 100 Hydrol.. is best for: Serious athletes prioritising fast post-workout recovery, Those with lactose sensitivity seeking a cleaner protein source

Frequently Asked Questions

Which is better, Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g or Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Powder?
Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g scores 82.0/100 overall while Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Powder scores 80.0/100. Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g comes out ahead, scoring higher on effectiveness (83.0 vs 84.0). Optimum Nutrition Gold Standar is best suited for Regular gym-goers and athletes seeking post-workout recovery and People on calorie-controlled or high-protein diets. Dymatize ISO 100 Hydrolyzed Go is better for Serious athletes prioritising fast post-workout recovery and Those with lactose sensitivity seeking a cleaner protein source.
Is Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g worth the price compared to Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Powder?
Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g costs £31.72 while Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Powder is £41.10. For value, Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g scores 74.0/100 vs Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Powder's 69.0/100. Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g delivers better value relative to its quality. Note that Optimum Nutrition Go comes as powder while Dymatize ISO 100 Hyd is ‎powder, which may affect your preference.
Which has fewer side effects?
Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g scores 89.0/100 for side effects (higher means fewer reported issues) while Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Powder scores 74.0/100. Reviewers report fewer side effects with Optimum Nutrition Gold Standard Whey Protein Powder Muscle Building Supplements With Glutamine and Amino Acids, French Vanilla Creme, 30 Servings, 900 g, Packaging May Vary, 891 - 908 g. For certification and testing, Optimum Nutrition Go scores 78.0/100 vs Dymatize ISO 100 Hyd's 80.0/100. Always consult a healthcare professional before starting any supplement.

Related Product Comparisons

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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