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Collagen peptides are one of the most popular supplements in the U.S., and the only peptide product sold as a dietary supplement in our store. This guide explains what collagen peptides are, what the “types” on the label mean and how to compare products, using our Vital Proteins Collagen Peptides as an example.
Key Takeaways
- Collagen peptides are collagen broken down (hydrolyzed) into smaller pieces so it dissolves easily.
- Types I and III are the most common in bovine and marine collagen powders.
- Compare products by grams of collagen per serving and cost per serving, not tub size alone.
- Collagen is a dietary supplement; it is not an FDA-approved drug.
What are collagen peptides?
Collagen is a structural protein found in skin, bones and connective tissue. Collagen peptides, also called hydrolyzed collagen, are collagen that has been broken down into smaller chains of amino acids. That processing is why unflavored collagen powders dissolve into hot or cold drinks without gelling, unlike ordinary gelatin.
What do the collagen types mean?
| Type | Where it is found in the body | Common supplement source |
|---|---|---|
| Type I | Skin, bone, tendons | Bovine hide, fish skin |
| Type II | Cartilage | Chicken cartilage |
| Type III | Skin, blood vessels (often alongside Type I) | Bovine hide |
“Multi collagen” products blend several sources to include more types. More types on the label is a formulation choice, not automatically a better product.
Bovine, marine or chicken: does the source matter?
Source matters most for dietary preferences and allergies. Bovine collagen comes from cattle hides, marine collagen from fish skin or scales, and chicken collagen from cartilage. People who avoid beef or fish, or have a fish allergy, should check the source. Look for sourcing details such as “grass-fed” or “wild-caught” if they matter to you, and remember those are sourcing claims, not quality tests.
How do I compare collagen products?
- Grams of collagen per serving. Check the Supplement Facts panel; servings vary widely.
- Cost per serving. Divide the price by the number of servings. A larger tub is often cheaper per serving.
- Added ingredients. Some products add vitamin C, hyaluronic acid, flavors or sweeteners.
- Third-party testing. Some brands use independent testing or certification programs; if present, it is on the label.
- Format. Powders deliver the most collagen per serving; capsules need several to match a scoop.
Is collagen a complete protein?
No. Collagen is rich in certain amino acids, such as glycine and proline, but it lacks tryptophan, so it is not a complete protein. It should not be counted as a replacement for other protein sources in your diet.
Frequently Asked Questions
Why does unflavored collagen dissolve so easily?
Hydrolysis breaks collagen into smaller peptides, which dissolve in hot or cold liquids without gelling.
Are collagen peptides the same as the peptides on your information pages?
No. Collagen peptides are a food-derived dietary supplement. The other peptide pages on our site describe drugs and compounds that are prescription-only, investigational or not FDA-approved, and are not sold here.
Shop Vital Proteins Collagen Peptides in three tub sizes, or read our Buyer’s Guide.
Related guides: Hydrolyzed Collagen: What It Is, How It Is Made and How It Differs From Gelatin, What Are Peptides? A Plain-English Guide, Best Time to Take Collagen: Timing, Evidence and Collagen vs Protein Powder, Marine Collagen vs Bovine Collagen: Collagen Types, Sources and Safety, Collagen Peptides Benefits: What Skin, Joint, Bone and Muscle Studies Show.
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