Collagen Unflavoured 320g
by Optimum Nutrition
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. Best for Adults seeking joint comfort support during or after regular exercise and Women over 30 looking to support skin elasticity, hair strength, and nail condition.
According to the AIScored 0–100 scoring system, Collagen Unflavoured 320g by Optimum Nutrition scores 70.0/100, ranking #7 out of 35 products in Skin, Hair & Nails (2026). Strongest category: Side Effects (82.0/100). Weakest: Certifications (40.0/100).
Is Collagen Unflavoured 320g worth buying?
“Optimum Nutrition's Collagen Unflavoured scores 70/100 and dissolves completely in any drink without affecting the taste—you're getting 20g of hydrolysed collagen plus Vitamin C per serving, so you won't need a separate supplement. Reviews consistently mention improvements in joint comfort and skin quality within weeks, which makes this a worthwhile investment if you're serious about collagen supplementation.”
What Do Reviewers Say About Collagen Unflavoured 320g?
Sample excerpts from currently available source material used in this product analysis.
"Very recommend. I drink this collagen with my morning coffee. It doesn't change the flavor, just slightly thickens the texture. After only a few days, I can feel my joints 'popping,' which means the synovial fluid is starting to build up—it..."
"It doesn't taste nice. I have tried collagen powder from different brands this one tastes very chemical like and not pleasant."
"I've been taking this for about a month now but taking collagen for a year just a different brand previously. I've certainly noticed improvements in my overall health, skin, hair since taking collagen and these have all continued since swit..."
"my wife has used this product for nearly one month and has taken the recommended amount daily , she has not really noticed any difference to skin or joints or bones.it was easy to mix with correct amount of water, and the taste was fairly n..."
"I’ve been taking collagen for a while now and have tried a few different versions. This one certainly feels like it makes a difference and is easy to take, however unlike some others it does have a slight smell and taste. Not overpowering a..."
How does Collagen Unflavoured 320g score?
Detailed score breakdown and key findings from our analysis of 13 reviews across 2 sources.
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
- +Clean, unflavoured formula with no added sugar or artificial flavourings
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
Watch Out
- !Taste and smell sensitivity varies — a small number of users find it noticeably unpleasant even in coffee
- !Visible benefits for skin and joints typically require 8–12 weeks of consistent daily use; do not judge efficacy after only 2–4 weeks
- !Not third-party tested — important for athletes subject to anti-doping regulations
- !Not suitable for vegans or those avoiding bovine-derived products; cross-contamination warnings for egg, milk, peanuts, soy, and tree nuts
What is Collagen Unflavoured 320g?
Collagen Unflavoured 320g is a skin, hair & nails product by Optimum Nutrition in powder form, scoring 70.0/100 on AIScored.
- • Optimum Nutrition Collagen Peptides is a hydrolysed collagen supplement enriched with Vitamin C to support joint health.
- • Each serving provides 20g of high-quality collagen protein, primarily sourced from Type I bovine collagen — the same type found naturally in human skin and connective tissues.
- • Vitamin C contributes to normal collagen formation and helps maintain the normal function of cartilage, keeping joints comfortable and flexible during activity.
- • This unflavoured powder dissolves easily in water and can be taken at any time of day to help nourish your body from the inside out.
Is Collagen Unflavoured 320g Independently Tested?
No Third-Party Testing Visible
We could not find evidence of independent third-party testing for this product. This doesn't mean it's unsafe, but independent verification provides additional assurance.
How We Score Supplements
Our methodology analyses review data, ingredient science, and product information, then scores each product on a 0-100 scale across evidence-based categories:
Effectiveness
How well the product delivers its claimed benefits, based on reviews and ingredient evidence.
Ingredient Quality
Bioavailable forms, clinically effective dosages, clean label, minimal fillers.
Value for Money
Price relative to ingredient quality, dosage count, and effectiveness.
Side Effects Profile
Higher score = fewer side effects. 100 means virtually no adverse reactions reported.
Certifications & Testing
Third-party lab testing, GMP certification, and independent quality verification.
Overall Score
Weighted combination of all factors. Our bottom-line recommendation.
How Does Collagen Unflavoured 320g Compare?
See how this product stacks up against the top-rated skin, hair & nails in our database.
| Product | Score | Price |
|---|---|---|
| Collagen Unflavoured 320g (this) | 70.0 | £16.00 |
| Advanced Hydrolysed Marine Liqui... | 82 | £64.99 |
Price History (90 days)
Quick Facts
- Form
- Powder
- Vegan
- No
Frequently Asked Questions
Is Collagen Unflavoured 320g worth buying in 2026? ▼
What is the best price for Collagen Unflavoured 320g in the UK? ▼
What are the pros and cons of Collagen Unflavoured 320g? ▼
Is Collagen Unflavoured 320g third-party tested? ▼
How does Collagen Unflavoured 320g compare to Advanced Hydrolysed Marine Liquid Collagen Couples Supply (2x 28-Day Supply)? ▼
Disclaimer: AIScored provides research-backed summaries based on publicly available reviews and product information. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Affiliate links may earn us a commission at no extra cost to you.
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