Vegan Collagen: Is There Such a Thing, and What Is in the Jar?

Vegan collagen, in the strict sense, is not something you can pick up at the store today. Collagen is a protein made by animals, and collagen supplements are made from animal hide, bones, fish skin or scales, or eggshell membrane. Products sold as vegan or plant-based collagen are usually “collagen builders” or “boosters”: blends of vitamin C, zinc, amino acids such as glycine and proline, and plant extracts that your body can use to make its own collagen. Lab-grown collagen made by engineered microbes or plants does exist, but it is still mainly a research and biomedical material. Here is what each option really is, what the limited studies show, and how to read the label.

Peptide Labs sells a bovine collagen product and other supplements mentioned below, but this article does not recommend any of them. It is general information, not medical advice.

Is there vegan collagen?

Not in nature. The Harvard T.H. Chan School of Public Health puts it plainly: in food, collagen is found only in animal flesh, such as meat and fish that contain connective tissue. Collagen makes up roughly a quarter to a third of the protein in the human body, and it is built in our own cells from amino acids. Plants do not make it, so no fruit, vegetable or seaweed contains collagen to extract.

That leaves three things a label might mean when it says vegan collagen:

Our guide to marine vs bovine collagen covers the animal sources, and hydrolyzed collagen explains how those proteins are broken into peptides.

What plant based collagen boosters contain

Your body does not absorb collagen as a whole protein anyway. Animal collagen is digested into amino acids and small peptides, and the body builds new collagen where it needs it. Plant based collagen boosters skip the animal step and supply some of the raw materials and helpers directly. Labels vary, but the usual ingredients fall into a few groups:

• Vitamin C: MedlinePlus notes that the body uses vitamin C to form collagen for skin, tendons, ligaments and blood vessels. It is also easy to get from citrus fruit, berries, peppers and tomatoes.
• Zinc and copper: Cleveland Clinic lists both among the minerals the body needs to make collagen. Harvard names legumes, nuts, seeds and whole grains as plant sources of zinc.
• Amino acids: glycine, proline and lysine are the building blocks most often added. Collagen is unusually rich in glycine and proline, and lysine is needed for the steps that make finished collagen strong.
• Plant extracts and silica: herbal extracts are often marketed for skin. Silica, or silicon dioxide, also turns up as a routine “other ingredient” in many capsules, so its presence on a label does not by itself mean much.

None of this is collagen, and the label should not call it that. A plant protein powder, legumes, soy, nuts and seeds can supply the same amino acids, which is why Harvard’s nutrition experts favor food first. Animal collagen has its own gaps: it lacks the amino acid tryptophan, so it is an incomplete protein either way.

What the research shows on vegan collagen products

The evidence is thin. Two human studies come up most often:

• A 2024 study of a vegan collagen builder gave 66 adults aged 30 to 50 one of three amounts for 60 days and reported changes in skin, hair and joint comfort. There was no placebo group, and the authors worked for the company that makes the product and a contract research firm, so the results cannot show whether the product caused the changes.
• A 2025 pilot trial of a hibiscus extract sold as a collagen alternative randomized 98 adults with dry skin and wrinkles to the extract or a placebo for 12 weeks. Skin hydration, elasticity and wrinkle depth improved more with the extract. It was a single small trial, and several co-authors were employed by private companies.

For comparison, animal collagen peptides have been tested in more trials for skin and joints, but many were funded by collagen makers, and a 2025 meta-analysis found no skin effect in the studies without that funding. Our guide to collagen peptides benefits walks through those results. No trial we found has compared a vegan collagen builder with animal collagen head to head.

Lab-grown collagen: the real vegan collagen

The closest thing to true vegan collagen is recombinant collagen. Scientists insert collagen genes into yeast, plants or other organisms, which then produce collagen or a collagen-like protein with no animal involved. A 2026 review in Trends in Biotechnology describes it as an emerging alternative to animal collagen. The hard part is finishing the protein: natural collagen gets chemical modifications after it is made, such as hydroxylation, that hold its triple-helix shape together, and microbes do not add these on their own. Research groups have engineered moss to produce a modified human type III collagen, and the chemical company Evonik makes a recombinant collagen-like protein that its own researchers have tested in fibers for medical uses.

So far this work centers on medical materials, tissue engineering and lab-grown meat rather than dietary supplements. In a PubMed search we did not find published human trials of recombinant collagen taken by mouth. If a supplement claims to contain animal-free collagen, look for the production organism, the type of protein and independent testing on the label or the brand’s site.

How to read a vegan collagen label

1. Look for the word builder, booster or support. These terms usually mean there is no collagen inside. That is fine as long as you know it.
2. Read the Supplement Facts panel. Check which vitamins, minerals and amino acids are listed and at what share of the Daily Value, so you do not double up with a multivitamin.
3. Scan the other ingredients. Gelatin capsules, fish collagen and milk protein can appear in products that are not sold as collagen at all.
4. Check for a vegan certification and allergen statements. A “Contains” line naming fish or milk rules a product out for vegans.
5. Look for third-party testing. The FDA does not review supplements before they are sold, so an independent seal is one outside check that a label matches the contents.

Labels we carry that show the difference

Peptide Labs does not sell a vegan collagen product. Three labels in our catalog show why reading the fine print matters:

• Vital Proteins Collagen Peptides is a single-ingredient collagen powder made from grass-fed, pasture-raised bovine hide, so it is not suitable for vegans or vegetarians. The label says collagen is not a complete protein and should not replace dietary protein, and that it is made in a facility that also processes milk and fish.
• FOODOLOGY Coleology Cutting Jelly is a fiber jelly, not a collagen product, yet its other ingredients include fish collagen, milk protein and elastin, and it carries a milk, fish and wheat allergen statement.
• Foodology Coleology Cut PRO tablets are built around green tea extract, but fish collagen and milk protein hydrolysate appear in the small-amount ingredients, so the label lists milk and fish.

Who should be careful

Collagen builders are mostly vitamins, minerals and amino acids, so the main risk is stacking them on top of other supplements. Herbal extracts can interact with medicines, and safety data for many of them in pregnancy and breastfeeding is limited. People with kidney disease should ask before adding amino acid or mineral supplements. If you avoid animal foods because of a fish, milk or egg allergy, take every “may contain” statement seriously.

Frequently Asked Questions

Want to know whether collagen does anything for hair? See our companion guide to collagen for hair.

Questions about a label? Contact us or read our Buyer’s Guide. Follow the label and ask a healthcare provider before starting any supplement, especially if you take medicines. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Last reviewed October 2026.

Related guides: Collagen Peptides Benefits: What Skin, Joint, Bone and Muscle Studies Show, Hydrolyzed Collagen: What It Is, How It Is Made and How It Differs From Gelatin, Marine Collagen vs Bovine Collagen: Collagen Types, Sources and Safety.