Because the milligram amount is fixed, a lighter body gets more drug exposure per pound: roughly 22% more at 70 kg and about a third less at 120 kg, compared with a 90 kg reference. The dose still comes from response and tolerability, but a lighter person is running a hotter exposure at the same number on the vial
Another study by Sudakov et al
GHK-Cu works through regenerative pathways including collagen production, growth factor secretion (VEGF, HGF), and follicle enlargement
Some tell skin cells to produce more collagen, some help regulate inflammation and tissue repair, while others act as hormones involved in appetite and metabolism, he says, adding that he has noticed an increasing interest in regenerative medicine and longevity driven by injectable peptides, which have surged in interest on TikTok
Cell and tissue research, 377 (2), 153159
Certain states require prescriptions when BAC water accompanies injectable drugs