The current GHK-Cu FDA approval status is mainly influenced by high drug development costs, limited clinical data, formulation stability challenges, and its established role as a GHK-Cu cosmetic ingredient
An investigation by this masthead found that peptides are readily available online, and that they can be purchased without medical oversight and delivered by post within days
Copper bonded amino acid GHK-CU is a complex composed of three amino acids and one copper ion discovered by scientists from serum
But reality is not this clean
Gs recruitment assay G protein recruitment to CTR or individual AMYR subtypes was measured in COS-7 cells (ATCC, CRL-1651) transfected with c-myc-hCTRaleu-Rluc8:Gs-Venus:G1:G2, c-myc-hCTRaleu:RAMP1 Nluc:Gs-Venus:G1:G2, c-myc-hCTRaleu:RAMP2-Nluc:Gs-Venus:G1:G2 or c-myc-hCTRaleu:RAMP3-Nluc:Gs-Venus:G1:G2 at a ratio of 2:0.1:1:1:1, in a total of 51 ng DNA per well using PEI at a ratio of 1:6 of DNA to PEI
There are many reasons why one might not get enough Vitamin D: you may be lactose intolerant, or you may live in Minnesota and not see the sun for six months out of the year