CPII

1. Glucosamine has no effect on CPII in humans.

   “administration of glucosamine-containing diet significantly decreased the CTX-II level but not the CPII level in these athletes.”

   Human trialin soccer and rugby players with intense joint loading

   Chondroprotective action of glucosamine, a chitosan monomer, on the joint health of athletes

   International journal of biological macromolecules·Mar 30, 2019

2. Glucosamine has no effect on CPII in humans.

   “In contrast, glucosamine administration did not essentially affect the increased level of CPII.”

   Human trialin soccer players1.5 g and 3 g/day3 months

   Evaluation of the effect of glucosamine administration on biomarkers for cartilage and bone metabolism in soccer players

   International journal of molecular medicine·Oct 1, 2009

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