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Crossing the blood-brain barrier: glutathione-conjugated poly(ethylene imine) for gene delivery

However, "allowed for cosmetic use" and "FDA-approved drug" are two different regulatory concepts

publicly stated during a Joe Rogan podcast appearance and reiterated in follow-up HHS communications that the FDA would return 14 of 19 previously Category 2 peptides to Category 1 compounding status

Stem Cells Transl Med, 2022

After he published a series of animal and cell studies on humanins potential benefitsthe peptide seemed to curb inflammation, control glucose, and possibly even provide protection against Alzheimersso-called biohackers began ordering it on the gray market