ghk-cu capsules – Nordsci GHK-Cu Copper Peptide Supplement, Anti-Aging
Description
[DOI] [PubMed] [Google Scholar] 16.Deconinck E., Vanhee C., Keizers P., Guinot P., Mihailova A., Syversen P.V., Li-Ship G., Young S., Blazewicz A., Poplawska M., et al

You mentioned biohacking

A multivitamin may be considered for patients with significantly reduced food intake or documented nutritional gaps, though the US Preventive Services Task Force notes insufficient evidence for routine multivitamin use in generally healthy adults

Depending on your protocol, this may involve quick and virtually painless subcutaneous injections or intravenous (IV) infusions for immediate systemic delivery
Fat-soluble vitamins (A, D, E, and K) should be taken with meals containing some dietary fat to optimize absorption
