Collagen Unflavoured 320g vs Marine Collagen Complex with Vitamin C, Hyaluronic Acid, Biotin
Side-by-side comparison of scores, ingredients, prices and real customer feedback for Collagen Unflavoured 320g and Marine Collagen Complex with Vitamin C, Hyaluronic Acid, Biotin.
Last verified: 07 Apr 2026 · Based on 25 reviews
Collagen Unflavoured 320g scores 70.0/100 vs Marine Collagen Complex with Vitamin C, Hyaluronic Acid, Biotin at 70.0/100. Collagen Unflavoured 320g wins on effectiveness, ingredient quality, certifications. Marine Collagen Complex with Vitamin C, Hyaluronic Acid, Biotin is stronger on value for money and side effects.
Which is better: Collagen Unflavoured 320g or Marine Collagen Complex wit...?
Shivay Herbals wins on value (91 vs 62), costing half the price for a two-month supply. Optimum Nutrition is the better pick for those wanting a higher therapeutic dose — its 20g serving dwarfs the 1,000mg capsule, which falls well short of clinically studied amounts.
— AIScored Editorial Team
How Do the Scores Compare?
Collagen Unflavoured 320g
Optimum Nutrition
|
Marine Collagen Complex wit...
Shivay Herbals
|
|
|---|---|---|
| Overall Score | 70.0 | 70.0 |
| Effectiveness |
71.0/100
Best
|
65.0/100 |
| Ingredient Quality |
75.0/100
Best
|
70.0/100 |
| Value for Money | 62.0/100 |
91.0/100
Best
|
| Side Effects | 82.0/100 |
93.0/100
Best
|
| Certifications |
40.0/100
Best
|
38.0/100 |
| Best Price | £16.00 Holland & Barrett → |
£9.99
Amazon UK →
Cheapest
|
| Form | Powder | Capsule |
| Dose | None | None |
| Third-Party Tested | ✗ No | ✗ No |
| Reviews Analysed | 13 | 12 |
Collagen Unflavoured 320g
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
Marine Collagen Complex with Vit...
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
What does the data say about Collagen Unflavoured 320g vs Marine Collagen Comple...?
The core difference here is dose and delivery. Optimum Nutrition's powder delivers 20g of hydrolysed collagen per serving — well within the range used in clinical research — with Vitamin C already included. Shivay Herbals takes the capsule route, offering a tidier daily habit but only 1,000mg per serving, which sits well below the 2.5–10g threshold most studies use to demonstrate measurable skin and joint benefits. At £16.00 versus £9.99, the Optimum Nutrition tub also costs more upfront, though its value score of 62/100 reflects the higher price per gram of active ingredient.
If you're after genuine therapeutic impact — particularly for joint recovery after exercise or meaningful skin changes — the Optimum Nutrition powder (70/100) is the more credible option. The 20g dose matters, and reviewers consistently report it dissolves cleanly in hot drinks.
Shivay Herbals (70/100, value score 91/100) suits someone who wants an affordable, fuss-free daily habit without powders or flavour. At roughly £5 per month, the commitment is low — useful if you're testing whether collagen makes a difference for you at all. Just go in with realistic expectations about what 1,000mg can deliver. Neither product carries third-party certification, so competitive athletes should note that caveat for both.
Optimum Nutrition Collagen Peptides is a hydrolysed Type I bovine collagen powder delivering 20g per serving alongside Vitamin C to support the body's own collagen synthesis.
What are the key differences?
Frequently Asked Questions
Which is better, Collagen Unflavoured 320g or Marine Collagen Complex with Vitamin C, Hyaluronic Acid, Biotin? ▼
Is Collagen Unflavoured 320g worth the price compared to Marine Collagen Complex with Vitamin C, Hyaluronic Acid, Biotin? ▼
Which has fewer side effects? ▼
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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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