Any weight loss they experience is attributable to those co-treatments, not to GHK-Cu itself
Cyanocobalamin : The most widely available synthetic form
Western blot analysis Western blotting was performed as previously described via the following antibodies: FBXO22, BACH1, KLF4, LKB1, SNAL1, PTEN, KDM4A, BAG3, and GAPDH (all from Proteintech, Rosemout, IL)
(PubMed) Carr AC, Block G, Lykkesfeldt J
Even a few hours can reduce potency noticeably
Everything below is scoped to this exact listing rather than to research peptides in general