H.et al (2025)
The "right" dose sits in a narrow window that depends on: Delivery method - injectable GHK-Cu vs topical GHK-Cu vs oral/sublingual GHK-Cu Goal - skin rejuvenation , hair and scalp support, wound healing , general anti-ageing Individual factors - age , skin type , baseline GHK levels , other peptides being stacked Natural plasma GHK falls from roughly 200 ng/ml at age 20 to around 80 ng/ml by age 60
Potential Side Effects, Safety Profile, and Regulatory Status of BPC 157 In preclinical studies, BPC 157 caused mild local irritation at the site of administration, which was the most commonly reported side effect but did not appear to lead to long-term issues
Heres what confuses people: they sound similar, they both decrease as you age, and theyre both promoted for longevity
Maquart, Pickart, and colleagues established this in fibroblast culture in 1988 ( FEBS Letters ) and confirmed it in vivo in rat wound models in 1993 ( Journal of Clinical Investigation ) 5 6
