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Linus Pauling Institute Oregon State University Reviewed in June 2025 by: Anitra C
Vitamin B12 plays a key role in regenerating nerve cells and restoring proper function
It acts as a potent agonist of the ghrelin receptor (GHS-R1a), promoting robust stimulation of endogenous growth hormone (GH) release
The 0.9% benzyl alcohol preservative allows the vial to be accessed multiple times over 28 days while maintaining sterility, unlike single-use sterile water
Summary: AOD 9604 and retatrutide are both unlicensed investigational compounds in the UK, and there is no clinical evidence or regulatory guidance supporting their combined use
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