Avian Cartilage

BotanicalBest before bedBest taken away from food

What is it

Avian cartilage, usually derived from chicken sternum, is a source of native (undenatured) type II collagen, glycosaminoglycans, and hyaluronic acid. It is most often used in joint support supplements.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Knee osteoarthritis pain and function

Good Evidence

Randomized trials of UC-II at 40 mg/day have shown modest improvements in joint pain and function compared with placebo and with glucosamine plus chondroitin in some studies.

How it works

Undenatured type II collagen (UC-II) from chicken sternum is thought to act through oral tolerance: small amounts of intact type II collagen interact with gut-associated lymphoid tissue, modulating immune responses against joint cartilage type II collagen. This is distinct from hydrolyzed collagen, which provides amino acids and peptides rather than intact collagen. Avian cartilage may also include chondroitin sulfate and hyaluronic acid, although concentrations are lower than dedicated chondroitin or HA supplements.

Dosage

Studies of UC-II have used 40 mg/day of standardized product. Generic avian cartilage doses vary by product.

When and how to take it

UC-II is typically taken on an empty stomach (often at bedtime or 1 hour before food) to preserve intact collagen for immune interaction in the gut.

1 commercial form

Compare the main delivery options and what they’re best suited for.

Undenatured type II collagen (UC-II)

Standardized to a specified amount of native type II collagen.

Small amounts are needed because mechanism relies on immune signaling rather than systemic absorption.

Safety

Generally well tolerated. Mild GI upset is the most common report. People with chicken or egg allergy should avoid.

Who should be cautious

Avoid in chicken/poultry allergy. Pregnancy and lactation safety data are limited.

Interactions

No significant medication interactions reported.

Frequently asked questions

Is avian cartilage the same as hydrolyzed collagen?⌄

No. Native type II collagen from cartilage works by immune modulation; hydrolyzed collagen acts as a source of amino acids and peptides.

Should I take UC-II with food?⌄

Most studies use empty-stomach dosing to preserve the intact collagen molecule.

References

Avian Cartilage on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Avian Cartilage (PubMed search) — PubMed link

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.