Plasma levels of GHK have been documented to decline from approximately 200 ng/mL at age 20 to roughly 80 ng/mL at age 60, a 60% drop [1]
By targeting this pathway, AOD 9604 has been shown to help maintain lean mass in certain models, without exhibiting the growth-promoting effects of intact HGH
The two combined: there's no published research on using BPC-157 and TB-500 together
Interestingly, the same gene expression research that identified this theoretical risk also found that GHK-Cu suppresses RNA production in 70% of 54 genes overexpressed in metastatic colon cancer
These injections typically contain a combination of vitamins, amino acids, and minerals, including vitamin B12, methionine, inositol, choline, and sometimes other components like L-carnitine