How to Read a Collagen Label: Peptides Per Serving

The number that matters most on a collagen label is grams of peptides per serving, not the weight of the whole pack. Once you know what to look for, most labels become straightforward to compare — including ours.

Peptides per serving: the core number

Collagen peptides are short chains of amino acids produced by breaking down whole collagen protein through a process called hydrolysis. The peptides per serving figure tells you how many grams of that hydrolysed collagen you are actually consuming in one dose.

A label that says "5 g serving" is not necessarily giving you 5 g of collagen peptides. The serving could include fillers, flavourings, sweeteners, or other ingredients. Check the ingredients list and the nutrition table to confirm how much of the serving weight is actually collagen peptides. If the label does not break this out clearly, that is worth noting.

Common serving sizes in the UK market run from around 5 g to 15 g of collagen peptides. Note that no authorised health claim exists for collagen peptides in Great Britain, so dose comparisons are a commercial benchmark, not a clinically established measure of benefit. The research behind specific doses varies considerably, and we are not going to tell you one amount is definitively better than another.

Named peptide ingredients: what they mean

Some collagen products use trademarked peptide ingredients rather than generic hydrolysed collagen. The three you will most commonly see are Peptan, Naticol, and VERISOL. Here is what each one is, in neutral terms.

Peptan

Peptan is a branded hydrolysed collagen produced by Rousselot. It is available in both bovine and marine forms. Rousselot publishes a body of research conducted using their specific ingredient. Seeing Peptan on a label tells you the manufacturer used a specific, documented raw material rather than an unspecified collagen hydrolysate.

Naticol

Naticol is a marine collagen peptide ingredient produced by Weishardt. It is derived from fish skin and scales. Like Peptan, it comes with a defined molecular weight profile and published research specific to that ingredient.

VERISOL

VERISOL is produced by GELITA and is a bovine-derived collagen peptide with a specific molecular weight range. GELITA has funded research using this ingredient. VERISOL is often positioned around bioavailability, though we note that comparisons between branded and generic collagen peptides in independent research remain limited.

Using a named ingredient is not automatically better than a quality generic hydrolysate, but it does give you a traceable raw material with documented specifications. If a label names none of these but the product is otherwise well specified, that does not make it inferior — it simply means less published data exists for that exact ingredient.

Molecular weight: what kDa means

Molecular weight in collagen is expressed in kilodaltons (kDa). Whole collagen has a molecular weight above 100 kDa. Hydrolysis breaks it into shorter peptides; most commercial collagen peptide ingredients fall in the range of roughly 2–10 kDa, though this varies by manufacturer and process.

Lower molecular weight is associated with easier solubility in some manufacturer data, but whether this translates into any meaningful difference in human absorption at typical serving sizes has not been established in independent research. If a label or manufacturer claims a specific kDa figure, you can use it to compare products, but do not treat a small kDa number as proof of superior efficacy on its own.

If no kDa figure is given, you can sometimes find it in the manufacturer's technical data sheet for the raw ingredient, particularly if they use a named peptide like those above.

Why pack size misleads

A 500 g tub sounds like more than a 300 g tub. But if the 500 g product is dosed at 15 g per serving and the 300 g product at 5 g per serving, the smaller pack gives you 60 servings against the larger pack's 33. Price per serving, not price per kilogram, is the comparison that matters.

The short version: divide the total collagen peptide content of the pack (not the gross weight) by the number of servings, then divide the price by that same number.

Also watch for serving size variation within the same product range. Some brands list a "recommended" serving and a "maintenance" serving that differ substantially. Make sure you are comparing the same serving size when you put two products side by side.

Other label details worth checking

• Source: bovine (cattle hide) or marine (fish skin or scales). These are different raw materials. If source matters to you for dietary, ethical, or other reasons, check the label rather than assuming.
• Type of collagen: some labels specify type I, type II, or type III. Marine collagen peptides are predominantly Type I; bovine collagen peptides are predominantly Types I and III. Not all labels state this explicitly, so checking the source can help you infer the collagen types present.
• Added ingredients: vitamin C is sometimes included. Vitamin C contributes to normal collagen formation, which is a permitted claim. Other additions — hyaluronic acid, biotin, zinc — vary widely and the evidence base for each differs.
• Third-party testing: batch-level testing or certification from an independent body (such as Informed Sport) is relevant if you are subject to anti-doping rules.

Applying this to Pump House products

Apply every check above to us as you would to anyone else. Our bovine collagen powder is hydrolysed Type I and III at 10,000mg of peptides per 10g serving, from the hides of grass-fed, pasture-raised EU cattle. Our marine collagen powder is Type I from wild-caught North Atlantic fish, and contains fish — not suitable for anyone with a fish or shellfish allergy or intolerance. Both are unflavoured and single-ingredient. If you want the kDa specification or the origin documentation for our raw material, ask us and we will share what we hold.

If you have a health condition that affects your dietary needs or you are taking medication, speak to your GP before adding any new supplement to your routine.