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Description
Another review published in the journal Orthopedics, suggests the benefits of glucosamine are due to placebo effect [R]

Thomas GR, McCrossan M, Selkirk ME
Elevated NAD+ levels activate sirtuins, particularly SIRT1, which are NAD+-dependent deacetylases that regulate numerous metabolic processes including fat oxidation, glucose metabolism, mitochondrial biogenesis, and cellular stress responses

Most clinical trials have shown it is well accepted by most patients and the side effects have mostly been negligible and very few have occurred
