Gold Standard 100% Casein Powder Chocolate 924g vs Skyr Protein Shake Strawberry Yoghurt 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 Strawberry Yoghurt 300g.

Last verified: 07 Apr 2026 · Based on 8 reviews

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80.0

Quick Answer

Gold Standard 100% Casein Powder Chocolate 924g scores 80.0/100 vs Skyr Protein Shake Strawberry Yoghurt 300g at 70.0/100. Gold Standard 100% Casein Powder Chocolate 924g wins on value for money. Skyr Protein Shake Strawberry Yoghurt 300g is stronger on side effects.

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

Gold Standard 100% Casein Powder Chocolate 924g wins with a score of 80.0/100. It helps muscle-building athletes. Convenience-focused consumers seeking ready-to-drink protein should buy the Skyr Protein Shake Strawberry Yoghurt 300g instead.

— AIScored Editorial Team

How Do the Scores Compare?

Gold Standard 100% Casein P...

Skyr Protein Shake Strawber...

	Gold Standard 100% Casein P... Optimum Nutrition	Skyr Protein Shake Strawber... All Stars
Overall Score	80.0	70.0
Effectiveness	80.0/100 Best	80.0/100 Best
Ingredient Quality	80.0/100 Best	80.0/100 Best
Value for Money	70.0/100 Best	60.0/100
Side Effects	80.0/100	90.0/100 Best
Certifications	40.0/100 Best	40.0/100 Best
Best Price	£50.00 Holland & Barrett →	£0.85 Amazon UK → Cheapest
Form	powder	None
Dose	None	None
Third-Party Tested	✗ No	✗ No
Reviews Analysed	4	4

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

View full review →

Skyr Protein Shake Strawberry Yo...

Pros

✓Excellent taste and palatability—described as 'the best tasting protein powder' by reviewers
✓High protein content per serving (cultured dairy provides concentrated protein)
✓Smooth, creamy texture differentiates it from typical whey protein powders
✓Convenient ready-to-drink format; no mixing required

Cons

✗Not suitable for vegans or those with dairy intolerance
✗Limited product transparency—no third-party testing certification listed
✗Lower review volume (only 3 reviews) limits statistical reliability
✗Likely higher cost per serving compared to unflavored powder alternatives

Best For

Convenience-focused consumers seeking ready-to-drink protein Those preferring dairy-based over whey isolate Post-workout recovery seekers valuing taste Breakfast or snack replacement users Individuals interested in probiotic-containing protein sources

Amazon UK £0.85 Holland & Barrett £20.00

View full review →

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

Gold Standard 100% Casein Powder Chocolate 924g delivers 24g protein with 1.5g sugar per serving. This slow-release powder keeps you full for long periods. Skyr Protein Shake Strawberry Yoghurt 300g uses cultured dairy for its protein hit. Both products share effectiveness and ingredient quality scores of 80/100. Gold Standard 100% Casein Powder Chocolate 924g costs £50.00. Skyr Protein Shake Strawberry Yoghurt 300g is £0.85.

Muscle-building athletes seeking overnight support should choose Gold Standard 100% Casein Powder Chocolate 924g. It helps those who prioritise satiety. If you value convenience and post-workout recovery, Skyr Protein Shake Strawberry Yoghurt 300g is the right move. Gold Standard 100% Casein Powder Chocolate 924g wins on value for money with 70/100, beating the 60/100 score of Skyr Protein Shake Strawberry Yoghurt 300g.

Skyr Protein Shake Strawberry Yoghurt 300g has a creamy texture and is called the best tasting protein powder by reviewers. It is not for vegans. Gold Standard 100% Casein Powder Chocolate 924g also tastes great, though it can get clumpy with full-fat milk. Use water or semi-skimmed milk for best results. With an overall score of 80/100, Gold Standard 100% Casein Powder Chocolate 924g beats Skyr Protein Shake Strawberry Yoghurt 300g at 70/100.

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..

80.0/100

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..

90.0/100

Certifications

Gold Standard 10..

40.0/100

Skyr Protein Sha..

40.0/100

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 Stra.. is best for: Convenience-focused consumers seeking ready-to-drink protein, Those preferring dairy-based over whey isolate

Frequently Asked Questions

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

Gold Standard 100% Casein Powder Chocolate 924g scores 80.0/100 overall while Skyr Protein Shake Strawberry Yoghurt 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 Strawberry is better for Convenience-focused consumers seeking ready-to-drink protein and Those preferring dairy-based over whey isolate.

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

Gold Standard 100% Casein Powder Chocolate 924g costs £50.00 while Skyr Protein Shake Strawberry Yoghurt 300g is £0.85. For value, Gold Standard 100% Casein Powder Chocolate 924g scores 70.0/100 vs Skyr Protein Shake Strawberry Yoghurt 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 Strawberry Yoghurt 300g scores 90.0/100. Reviewers report fewer side effects with Skyr Protein Shake Strawberry Yoghurt 300g. For certification and testing, Gold Standard 100% C scores 40.0/100 vs Skyr Protein Shake S's 40.0/100. Always consult a healthcare professional before starting any supplement.