It may also attenuate stress and have applications as an anticonvulsant, antidepressant, and neuroprotective agent.39 Thymosin alpha-1: Thymosin alpha-1 may offer numerous benefits related to immune function, including but not limited to treating hepatitis B, treating infections, improving vaccine efficacy, and reducing the toxicity of chemotherapy.40 GHK-Cu: GHK-Cu is a complex of copper and the peptide GHK
Because of the 0.9% benzyl alcohol, bacterial growth is inhibited , so the opened vial remains sterile for multiple transfers (usually up to ~28 days if kept sealed and refrigerated)
High vitamin B12 levels can indicate health issues but might not always be serious
Fresher products provide longer useful life
So that's the biggest concerned BBC
Some of Kennedy's friends and associates are among the biggest proponents, including self-described "biohacker" and "longevity expert" Gary Brecka, who sells peptide injectables, patches and nasal sprays through his website for $350 to $600 each
