Not sure where I'd buy that in UK
Most B12 in the UK is injected into muscle, but the fatty subcutaneous route is a recognised alternative
Diabetologia 39 , 281288 (1996)
Now there are folks within the landscape of peptide therapeutics, folks meaning physicians and other practitioners, who said, ah, well, here's a peptide that is known to promote all these hormone pathways that are associated with vitality, libido, et cetera
Because GHK-Cus value comes from sustained, systemic support rather than a one-time concentrated dose, the format thats easiest to use consistently without needles, mixing, or refrigeration is generally the more effective choice in practice
Molar values assume an approximate molecular weight of 398 Da for the copper-bound complex