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For a safer comparison, read: Are GHK-Cu Injections Safe Enough

This means it is illegal to sell it over the counter, in supplement shops, or online for personal use without a prescription

CD38: Involved in cellular signaling processes, including calcium regulation and immune function

Recent research suggests that PQQ may protect against brain aging and neurodegeneration, including in cases of Parkinsons disease, stroke, and traumatic brain injury (TBI).14 An important note: If you decide to investigate the full Life Extension Track Record page, we recommend taking some of the information with a hefty grain of salt