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The most commonly reported injection site events included erythema (redness), induration (hardening), pain at the injection site, and itching

Performance benchmarks should include third-party test reports for efficacy claims like collagen production stimulation

People commonly use vitamin B6 for preventing and treating vitamin B6 deficiency

Studies show efficacy in removing senescent chondrocytes (PMID: 33996787) and alleviating age-related testosterone decline (PMID: 31959736)

Given that glutathione affects the production of melanin (the pigment that gives the human skin, hair and eyes their color) there are theoretical concerns about the long term skin cancer risk