Gold Standard 100% Casein Powder Chocolate 924g vs Skyr Protein Shake Vanilla Honey 300g

Side-by-side comparison of scores, ingredients, prices and real customer feedback for Gold Standard 100% Casein Powder Chocolate 924g and Skyr Protein Shake Vanilla Honey 300g.

Last verified: 07 Apr 2026 · Based on 5 reviews

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80.0

Quick Answer

Gold Standard 100% Casein Powder Chocolate 924g scores 80.0/100 vs Skyr Protein Shake Vanilla Honey 300g at 70.0/100. Gold Standard 100% Casein Powder Chocolate 924g wins on ingredient quality, value for money, side effects.

Which is better: Gold Standard 100% Casein P... or Skyr Protein Shake Vanilla ...?

Gold Standard 100% Casein Powder Chocolate 924g wins with a score of 80.0/100 because it delivers 24g of slow-release protein for overnight support. Pick Skyr Protein Shake Vanilla Honey 300g if you prefer whole-food dairy protein and a £20.00 price tag.

— AIScored Editorial Team

How Do the Scores Compare?

Gold Standard 100% Casein P...

Skyr Protein Shake Vanilla ...

	Gold Standard 100% Casein P... Optimum Nutrition	Skyr Protein Shake Vanilla ... All Stars
Overall Score	80.0	70.0
Effectiveness	80.0/100 Best	80.0/100 Best
Ingredient Quality	80.0/100 Best	70.0/100
Value for Money	70.0/100 Best	60.0/100
Side Effects	80.0/100 Best	70.0/100
Certifications	40.0/100 Best	30.0/100
Best Price	£50.00 Holland & Barrett →	£20.00 Holland & Barrett → Cheapest
Form	powder	None
Dose	None	None
Third-Party Tested	✗ No	✗ No
Reviews Analysed	4	1

Gold Standard 100% Casein Powder...

Pros

✓Excellent taste and smooth texture (mentioned by multiple reviewers)
✓High protein content (24g per 33g serving) with low sugar (1.5g) and minimal fat (0.7g)
✓Sustained satiety and fullness (reviewers report lasting until lunchtime)
✓Strong brand reputation with loyal customer base citing consistent quality

Cons

✗Mixing can be clumpy with full-fat milk; better with water or semi-skimmed milk
✗Premium pricing compared to competitor casein products
✗Not third-party tested (no NSF, Informed Choice, or similar certification)
✗Contains artificial sweeteners (Acesulfame K, Sucralose) and thickening gums which may affect digestion in sensitive individuals

Best For

Muscle-building athletes seeking overnight protein support People prioritizing satiety and sustained fullness between meals Those preferring slow-release protein over fast-digesting options Existing Optimum Nutrition brand loyalists Night-time protein supplementation (casein is ideal pre-sleep)

Holland & Barrett £50.00 Amazon UK £91.83

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Skyr Protein Shake Vanilla Honey 300g

Pros

✓Excellent taste and mixability with no artificial protein aftertaste (reviewer-confirmed)
✓High protein density from traditional skyr production (requires 3-4x milk vs yogurt)
✓Rich micronutrient profile including vitamins and minerals from whole milk base
✓Versatile – blends well into oats, yogurt, and other foods

Cons

✗Not vegan – dairy-based product unsuitable for plant-based diets
✗No third-party testing or quality certifications listed
✗Limited review data (only 1 review) – insufficient for robust assessment
✗Potential lactose content concern for lactose-sensitive individuals (not specified in product info)

Best For

Lactose-tolerant protein seekers Those preferring whole-food dairy protein over isolates Athletes and active individuals seeking high-protein snacks People wanting to mix protein into oats and yogurt bowls Consumers prioritizing taste over maximum protein-per-serving

Holland & Barrett £20.00

View full review →

What does the data say about Gold Standard 100% Cas... vs Skyr Protein Shake Van...?

Gold Standard 100% Casein Powder Chocolate delivers 24g of protein per serving with only 1.5g of sugar. It uses slow-release protein. This keeps you full until lunchtime. Skyr Protein Shake Vanilla Honey uses a traditional production process requiring three times more milk than standard yogurt. This creates a dense snack rich in natural vitamins and minerals. While the casein is a powder for recovery, the skyr shake is a dairy-based drink for active people.

Muscle-building athletes should choose Gold Standard 100% Casein Powder Chocolate for overnight support. It beats the competition. It has an overall score of 80/100 and higher ingredient quality at 80/100. Skyr Protein Shake Vanilla Honey is better for lactose-tolerant people who prefer whole-food dairy. The casein powder costs £50.00 but offers 70/100 value. The skyr shake is cheaper at £20.00 yet scores lower for value at 60/100 and quality at 70/100. Both products are tied for effectiveness at 80/100.

Gold Standard 100% Casein Powder Chocolate has a smooth texture but clumps if you use full-fat milk. Stick to water. Semi-skimmed milk also works well. Skyr Protein Shake Vanilla Honey mixes perfectly without any artificial aftertaste. Both products contain dairy, so they are not for anyone on a plant-based diet. The skyr option is ideal if you want a rich, honey-flavoured snack.

Gold Standard 100% Casein Powder Chocolate 924g Winner 80.0/100

Optimum Nutrition's Gold Standard 100% Casein Powder delivers 24g of micellar casein per serving with minimal fat and sugar, designed for slow protein digestion.

Effectiveness

Gold Standard 10..

80.0/100

Skyr Protein Sha..

80.0/100

Ingredient Quality

Gold Standard 10..

80.0/100

Skyr Protein Sha..

70.0/100

Value for Money

Gold Standard 10..

70.0/100

Skyr Protein Sha..

60.0/100

Side Effects

Gold Standard 10..

80.0/100

Skyr Protein Sha..

70.0/100

Certifications

Gold Standard 10..

40.0/100

Skyr Protein Sha..

30.0/100

What are the key differences?

Gold Standard 100% Case.. is best for: Muscle-building athletes seeking overnight protein support, People prioritizing satiety and sustained fullness between meals

Skyr Protein Shake Vani.. is best for: Lactose-tolerant protein seekers, Those preferring whole-food dairy protein over isolates

Frequently Asked Questions

Which is better, Gold Standard 100% Casein Powder Chocolate 924g or Skyr Protein Shake Vanilla Honey 300g? ▼

Gold Standard 100% Casein Powder Chocolate 924g scores 80.0/100 overall while Skyr Protein Shake Vanilla Honey 300g scores 70.0/100. Gold Standard 100% Casein Powder Chocolate 924g comes out ahead, scoring higher on effectiveness (80.0 vs 80.0). Gold Standard 100% Casein Powd is best suited for Muscle-building athletes seeking overnight protein support and People prioritizing satiety and sustained fullness between meals. Skyr Protein Shake Vanilla Hon is better for Lactose-tolerant protein seekers and Those preferring whole-food dairy protein over isolates.

Is Gold Standard 100% Casein Powder Chocolate 924g worth the price compared to Skyr Protein Shake Vanilla Honey 300g? ▼

Gold Standard 100% Casein Powder Chocolate 924g costs £50.00 while Skyr Protein Shake Vanilla Honey 300g is £20.00. For value, Gold Standard 100% Casein Powder Chocolate 924g scores 70.0/100 vs Skyr Protein Shake Vanilla Honey 300g's 60.0/100. Gold Standard 100% Casein Powder Chocolate 924g delivers better value relative to its quality.

Which has fewer side effects? ▼

Gold Standard 100% Casein Powder Chocolate 924g scores 80.0/100 for side effects (higher means fewer reported issues) while Skyr Protein Shake Vanilla Honey 300g scores 70.0/100. Reviewers report fewer side effects with Gold Standard 100% Casein Powder Chocolate 924g. For certification and testing, Gold Standard 100% C scores 40.0/100 vs Skyr Protein Shake V's 30.0/100. Always consult a healthcare professional before starting any supplement.