What it is
Regulatory status: food or dietary supplement
Mechanism evidence: human
At a glance
What it is, why people use it, the evidence, and what to know before trying it.
Why people use it
- Tendon and connective-tissue support
- Joint pain
- Skin elasticity
Evidence at a glance
Early tendon and rehabilitation research is promising but heterogeneous, while osteoarthritis trial pools suggest modest symptom improvement. Evidence is not strong enough to promise faster post-surgical healing.
Confidence: weak
Safety & interactions
Known side effects, interactions and use limits from reviewed sources.
Usually well tolerated but may cause gastrointestinal symptoms and can contain allergens depending on bovine, porcine, marine, or chicken source. Product quality and contaminant testing vary.
Forms and variants
This review does not automatically apply to:
- gelatin
- undenatured type II collagen
- bone broth
- topical collagen
Seen in protocols
Public protocols that include Collagen. Open one to see the full context and source.