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Types of UC-II (Undenatured Type II Collagen): Forms & Bioavailability

Evidence:Moderate
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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Forms Comparison

FormBioavailabilityBest For
UC-II (Patented)N/A (works via oral tolerance, not systemic absorption)Joint pain — the only form with clinical trial support; must remain undenatured

UC-II (Patented)

Bioavailability: N/A (works via oral tolerance, not systemic absorption). Best for: Joint pain — the only form with clinical trial support; must remain undenatured.

Full UC-II (Undenatured Type II Collagen) Guide

References

  1. RCTLugo JP, Saiber ZM, Yao X, et al. (2013). Undenatured type II collagen (UC-II) for joint support: a randomized, double-blind, placebo-controlled study in healthy volunteers. Journal of the International Society of Sports Nutrition. DOI PubMed
  2. RCTLugo JP, Saiber ZM, Lai JN, et al. (2016). Efficacy and tolerability of an undenatured type II collagen supplement in modulating knee osteoarthritis symptoms: a multicenter randomized, double-blind, placebo-controlled study. Nutrition Journal. DOI PubMed
  3. RCTCrowley DC, Lau FC, Sharma P, et al. (2009). Safety and efficacy of undenatured type II collagen in the treatment of osteoarthritis of the knee: a clinical trial. International Journal of Medical Sciences. DOI PubMed
  4. RCTSchön C, Knaub K, Alt W, Durkee S, et al. (2022). UC-II Undenatured Type II Collagen for Knee Joint Flexibility: A Multicenter, Randomized, Double-Blind, Placebo-Controlled Clinical Study.. Journal of integrative and complementary medicine. DOI PubMed