The most useful question you can ask about a collagen powder is also the one most labels make hardest to answer: how many grams of collagen peptides am I actually getting per serving? Here is where the number hides, and how to work it out yourself in about thirty seconds.
Collagen powders in the UK range from under 1g of collagen peptides a serving to well over 15g. They sit on the same shelf, use the same words on the front of the pack, and can cost about the same. The difference is on the back, in small type, and often expressed in a way that makes it hard to compare.
The Quick Answer
Why the Dose Is So Hard to Find
There are six common reasons the collagen figure on a UK label is not immediately obvious. None of them are illegal. All of them make comparison harder.
Work Out Your Real Dose in 30 Seconds
The Same Maths on Four Real Label Patterns
These are the four ways a UK collagen label most often presents its dose. The products are not named because the point is the arithmetic, not the brand. Run this on whatever is in your cupboard.
| What the label says | Serving size | Collagen you actually get | Cost per day | Cost per gram of collagen |
|---|---|---|---|---|
| “95g collagen per 100g” | 5g scoop, 60 servings | About 4.75g | 58p | 12.3p |
| “10g collagen complex” with no breakdown | 10g scoop, 30 servings | Cannot be determined | £1.17 | Cannot be determined |
| “1,000mg per capsule, take 3” | 3 capsules, 60 days | 3g | 58p | 19.4p |
| “14.77g collagen peptides per 15g serving” | 15g scoop, 30 servings | 14.77g | £1.17 | 7.9p |
Same £35 pack price on every row, so the only thing changing is the dose. Look at the last two columns together and the trap becomes obvious. The rows that look cheapest per day are the most expensive per gram, by two to three times. You are not saving money on a 5g serving. You are buying a third as much collagen and paying it back in months.
And the row you cannot complete at all is the one to walk away from. A product that will not tell you its dose has made a decision about how much it wants you to know.
How Much Do You Actually Need?
There is no single correct number
Daily amounts used in published human research on hydrolysed collagen peptides vary considerably, and study design, duration, participant group and the specific peptide used all differ. A dose figure on its own tells you very little about how a study was run or what it measured.
What it does give you is a sense of the range that products are being compared against. Against that range, a 2.5g serving and a 15g serving are not the same product in a smaller tub. They are different products at different price points, and the front of the pack rarely makes that clear.
Follow the directions on the specific product you buy. Taking more than the stated serving is not a shortcut.
Research context
Research on collagen peptides uses specific ingredients, doses, study designs and participant groups. Findings should be read within those conditions rather than treated as proof of a guaranteed result for any individual.
Published research examining FORTIGEL® has looked at it as an ingredient. That does not mean the finished Revayo Prime product has itself been clinically tested.
Vitamin C contributes to normal collagen formation for the normal function of cartilage, bones, skin, blood vessels, gums and teeth. This authorised claim relates to the Vitamin C in Revayo Prime.
The Dose Is Not the Only Number
Grams per serving is the figure that gets hidden most often, but it is not the only one worth asking for. Three more, and a label that is genuinely open with you answers all three without you having to email anyone.
- Is the peptide actually named? “Hydrolysed collagen” describes a process, not a specification. A named ingredient from a named manufacturer can be looked up. An unnamed one cannot.
- Does every ingredient carry a number? This is the real test of a “fully disclosed” formula. Add up the stated quantities. If they come to the serving size, nothing is hiding. If they do not, something is.
- Where was it made, and to what standard? A brand that is vague about the country and the certification is usually vague for a reason.
And the one idea that does not survive the arithmetic is that a low dose is the budget option. Work it through per gram and the small servings are usually the expensive ones, and the pouch runs out sooner in dose terms as well. Cheap per day and cheap per gram are different things, and only one of them is what you are actually paying.
Revayo Prime - £39.99
14.77g FORTIGEL® hydrolysed collagen peptides with 189.9mg Vitamin C per serving. Made in the UK. No fillers and no proprietary blends - the full dose is printed on the front of the pouch.
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Collagen Dosage FAQs
How much collagen should a man take per day?
There is no single correct figure. Published human trials on hydrolysed collagen peptides have used daily amounts commonly between about 2.5g and 15g depending on what was being studied. Follow the directions on the product you buy.
Is more collagen always better?
No. Dose is one criterion among several, and taking more than a product’s stated serving is not a shortcut. Consistency over months matters more than a larger single serving.
What does “95g per 100g” mean on a collagen label?
It describes the purity of the powder, not the amount in your scoop. Multiply the figure by your serving size and divide by 100 to get grams per serving.
Why can I not work out the dose in a proprietary blend?
A proprietary blend gives one combined weight for several ingredients without breaking them down, so the collagen portion is unstated and cannot be calculated from the label.
Is a smaller serving cheaper?
Usually only per day, not per gram. A 5g serving at the same pack price typically works out substantially more expensive per gram of collagen than a larger serving, and the pack runs out sooner in dose terms.
How much collagen is in Revayo Prime?
14.77g of FORTIGEL® hydrolysed bovine collagen peptides per 15g serving, alongside 189.9mg Vitamin C. The pouch holds 450g, which is 30 servings, and works out at about 9p per gram of collagen.
Great Britain Nutrition and Health Claims Register: authorised Vitamin C and collagen formation claim.
Retained EU Regulation No 1169/2011 on the provision of food information to consumers, as it applies in Great Britain.
This article is for general information only and does not replace medical or dietetic advice. Revayo Prime is a food supplement and is not intended to diagnose, treat, cure or prevent any disease. Speak to a healthcare professional before using supplements if you have a medical condition, are pregnant or breastfeeding, take prescribed medicines or are under 18. Food supplements should not replace a varied, balanced diet and healthy lifestyle.
FORTIGEL® is a registered trademark of GELITA AG.