Skip to content

Collagen Peptides

Collagen Peptides suppliers and sourcing guide

Collagen peptides are short protein chains made by breaking down collagen with enzymes. The raw material is usually bovine hide or bone, pig skin, or fish skin and scales; it is cleaned and pretreated, the collagen is extracted in hot water (much as in gelatin making), hydrolyzed to a target molecular weight, filtered, concentrated and spray-dried. Unlike gelatin, the peptides dissolve in cold water and do not gel.

Also known as
hydrolyzed collagen · collagen hydrolysate · bovine collagen peptides · marine collagen · fish collagen peptides · porcine collagen peptides
Facts checked
November 2026

Forms and grades of collagen peptides

Suppliers sell different products under the same name. Specify the one you need.

  • Bovine

    From cattle hides or bones, sometimes sold as grass-fed or pasture-raised. Bovine material comes with origin and processing documentation because of US rules on cattle-derived materials.

  • Porcine

    From pig skin. Common in Europe and Asia; not suitable for halal or kosher products.

  • Marine or fish

    From fish skin or scales, often from wild-catch or aquaculture by-products. Fish is a major food allergen in the US, so the finished label must declare it.

  • Molecular weight grades

    Specified by average molecular weight in daltons; low-molecular-weight grades enriched in di- and tripeptides are sold for specific formulations.

  • Instantized or agglomerated

    Granulated grades that disperse without clumping in cold water, for powdered drink mixes.

  • Branded peptides

    Trademarked peptide profiles from a single producer, sold with that producer's documentation and co-branding terms.

What to check on the COA

Compare each result with your own specification when the lot arrives.

Protein content
Protein by Kjeldahl or Dumas. Collagen is usually calculated with a nitrogen factor of about 5.55 rather than 6.25, so check which factor the COA uses before comparing suppliers.
Hydroxyproline
Hydroxyproline is characteristic of collagen and works as an identity and purity marker, helping catch dilution with cheaper proteins.
Molecular weight distribution
Average molecular weight and distribution by size-exclusion chromatography (SEC/GPC), confirming the grade ordered.
Species identification
DNA or PCR species testing where the label states bovine, marine or porcine-free, or carries halal or kosher claims.
Heavy metals
Lead, arsenic, cadmium and mercury; mercury is watched closely in marine collagen.
Microbiology
Total plate count, yeast and mold, coliforms or E. coli, Salmonella and often Staphylococcus aureus and Clostridium.
Moisture, ash and pH
Routine physical checks that affect stability and how the powder behaves in blends.

Storage, lots and expiry

Storage and shelf life

Collagen peptides are hygroscopic and cake if exposed to humid air, so keep containers tightly closed in a cool, dry place and reseal opened bags promptly. The dry powder is otherwise stable. Shelf life and retest dates come from the supplier's specification and COA.

Lots and expiry dates

Record the animal species and country of origin for every lot; bovine lots need documentation for cattle-material rules, and marine lots trigger fish allergen labeling. Molecular weight, hydroxyproline and protein results move slightly between lots, so compare each COA with the approved spec. Use FEFO.

Regulatory status

Facts from regulators and standards bodies, each linked to its source.

  • 21 CFR 189.5 bars prohibited cattle materials (such as specified risk materials) from human food; gelatin and hides are excluded from that definition.

    Source: ecfr.gov (opens in a new tab)
  • Under 21 CFR 189.5(c), makers and processors of human food containing cattle material must keep records showing it is free of prohibited cattle materials.

    Source: ecfr.gov (opens in a new tab)

This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.

Collagen Peptides suppliers

Manufacturers and distributors whose own websites say they sell it.

  • GELITA

    Manufacturer · Eberbach, Germany

    Sells it as PEPTIPLUS

    German family-owned collagen protein maker with more than 20 production sites; sells collagen peptides under several brands, including PEPTIPLUS and VERISOL, alongside gelatin.

  • Nitta Gelatin NA

    Manufacturer · Morrisville, NC

    Sells it as Replenwell

    North American arm of Japan’s Nitta Gelatin group, supplying bovine, porcine and fish gelatin and collagen peptides to food, supplement and pharmaceutical makers.

  • PB Leiner

    Manufacturer

    Sells it as SOLUGEL

    Gelatin and collagen peptide producer, part of Tessenderlo Group, with plants on four continents; sells SOLUGEL collagen peptides in bovine (including certified grass-fed) and fish grades.

  • Prinova

    Distributor · Itasca, IL

    Global ingredient distributor and premix maker that supplies supplement and food brands with proteins and other bulk ingredients, including whey and pea proteins, collagen peptides and creatine monohydrate.

Suppliers are in alphabetical order and none pays to appear. Each claim is checked against the supplier’s own website on the date shown. Ask for the specification sheet and a recent COA before you order, and confirm details with the supplier.

Frequently asked questions

What forms of collagen peptides can brands buy?

Common forms include bovine, porcine, marine or fish, molecular weight grades, instantized or agglomerated and branded peptides. Ask each supplier for the specification sheet of the exact grade they quote.

What should the COA for collagen peptides include?

Expect protein content, hydroxyproline, molecular weight distribution, species identification, heavy metals, microbiology and moisture, ash and pH, each with its method, specification and result for that lot.

How should collagen peptides be stored?

Collagen peptides are hygroscopic and cake if exposed to humid air, so keep containers tightly closed in a cool, dry place and reseal opened bags promptly. The dry powder is otherwise stable. Shelf life and retest dates come from the supplier's specification and COA.

What is the regulatory status of collagen peptides?

21 CFR 189.5 bars prohibited cattle materials (such as specified risk materials) from human food; gelatin and hides are excluded from that definition. Under 21 CFR 189.5(c), makers and processors of human food containing cattle material must keep records showing it is free of prohibited cattle materials.

Sell ingredients to brands?

Request a free listing for the ingredients you make or distribute. No paid placement.

Request a listing