Optimum Nutrition Collagen vs Shivay Herbals Marine Collagen

Pros

• ✓Dissolves completely in hot or cold drinks with minimal impact on taste or smell — repeatedly confirmed across reviews
• ✓Generous 20g hydrolysed collagen dose per serving with synergistic Vitamin C already included, removing the need for a separate supplement
• ✓Multiple reviewers report noticeable improvements in joint comfort, post-workout recovery, skin, and hair quality
• ✓Trusted Optimum Nutrition brand with consistent quality; comes with a convenient measuring scoop

Cons

• ✗A minority of users detect a distinct chemical-like taste or smell, especially noticeable in lighter drinks
• ✗No third-party testing or informed-sport certification disclosed — relevant for competitive athletes
• ✗Higher price per 100g compared to many competing collagen powders; at 20g/day the tub yields roughly 16 servings
• ✗Noticeable results are not universal — some users report no change after 4 weeks, likely because collagen typically requires 8–12 weeks to show measurable skin or joint effects

Best For

Pros

• ✓Exceptional value — approximately £9.99 for a 60-day supply works out to around £5 per month, significantly cheaper than collagen liquids and powders
• ✓No taste or aftertaste reported across all reviewers, making daily compliance straightforward for those sensitive to collagen flavour or odour
• ✓Well-rounded formula: hydrolysed Type I marine collagen combined with Vitamin C (EFSA-approved collagen-formation claim), Hyaluronic Acid, and Biotin
• ✓Made in the UK under GMP standards, free from GMOs and artificial colours — reassurance of basic quality control

Cons

• ✗1,000mg daily dose is at the low end of the therapeutic range — clinical research on skin and joint outcomes typically uses 2.5–10g per day; powder alternatives commonly deliver 5–10g per serving
• ✗Capsules described as notably large by multiple reviewers — may be a challenge for those with swallowing difficulties
• ✗No independent third-party testing (e.g. Informed Sport, NSF, Labdoor) — quality assurance relies solely on the manufacturer's own GMP declaration
• ✗Not suitable for vegetarians, vegans, or those with fish allergies — contains fish-derived collagen

Best For