What it’s for
- Studied for connective-tissue support
An animal-derived protein sold in several forms for skin, joint and connective-tissue goals.
Purpose, evidence and practical considerations.
Some studies suggest benefits for specific symptoms or tendon measures, but methods and products vary. Collagen cannot be assumed to speed post-surgical healing or replace complete dietary protein.
Confidence: weak
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.
Collagen peptides supply glycine, proline, hydroxyproline-containing peptides, and amino acids used in connective tissue. Exercise loading is the primary stimulus; supplements are studied as an adjunct, not a substitute for rehabilitation.
Regulatory status: food or dietary supplement
The evidence on this page does not automatically apply to:
How people use it, with their schedules, context and original sources.
before elbow straining, training, or stretching
Keith Baar-style tendon-loading protocol before straining the elbow
Amount and timing patterns reported in public protocols; these are observations, not instructions. Private and hidden usage is excluded.
These share a protocol with this intervention. This does not establish that they work together or are suitable alternatives.