Optimum Nutrition Gold Standard 100% Whey Protein 2.27kg vs Dymatize ISO100 Hydrolyzed Whey Protein Isolate 2.2kg

Pros

• ✓Consistently praised taste and mixability across multiple reviewers
• ✓Whey Protein Isolate listed as primary source — higher protein purity than concentrate-led formulas
• ✓Informed Choice and Banned Substance Tested certifications provide confidence for athletes
• ✓Strong value for money at 74 servings per 2.27 kg tub

Cons

• ✗Contains artificial sweeteners (sucralose and acesulfame potassium) which some consumers prefer to avoid
• ✗Not suitable for those with milk or soy allergies due to whey and soy lecithin content
• ✗Holland & Barrett reviews skew heavily 5-star, offering limited critical perspective
• ✗Customer service quality flagged as poor in at least one verified Trustpilot complaint

Best For

Pros

• ✓Excellent mixability — reviewers consistently note it blends smoothly without clumping or leaving a thick texture
• ✓Great taste across flavours — H&B reviewers praise it as genuinely enjoyable, not just tolerable
• ✓Hydrolyzed formula for faster absorption — ideal post-workout when rapid amino acid delivery matters
• ✓Very clean macros — 25g protein, <1g sugar, <1g fat, 120 kcal per serving with 5.5g BCAAs including 2.7g leucine (above MPS threshold)

Cons

• ✗Premium price point — explicitly flagged by reviewers and among the most expensive isolates per serving
• ✗Can be overly sweet at standard dilution — one reviewer recommends 450ml water per scoop rather than the suggested amount
• ✗Contains soy lecithin — minor concern for those avoiding soy entirely
• ✗Uses sucralose (artificial sweetener) alongside stevia — not suitable for those avoiding artificial additives

Best For