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What Does the Evidence Say
Retatrutide is being studied as a multi-receptor therapy
Research suggests it promotes angiogenesis, the formation of new blood vessels in tissues like tendons and ligaments that normally have very poor blood supply
But the most important answer is regulatory and medical: injectable GHK-Cu is not FDA-approved, and this article should not be used as self-injection instruction
It is research-only and not approved by the FDA or any major regulator for human use
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