For a practical injection checklist and tips see this injection guide: Vitamin B12 injection guide
Topical Applications: Peptides like GHK-Cu are well-known for topical applications in skin research
According to a 2019 study, the rate at which vitamins lose their potency depends on the form of the supplement, the storage methods, and the date of manufacture
It improves blood sugar control and insulin sensitivity
[PMID: 2912828] PubMed record related to this compound for laboratory literature review
(4) F Camanni, E Ghigo, and E Arvat (1998) Growth hormone-releasing peptides and their analogs Frontiers in Neuroendocrinology, 1998 Jan, Volume 19 (Issue 1), Pages 47-72