Store the lyophilized material at 20C, protected from light and moisture.
In the AHK-Cu vs GHK-Cu debate, GHK-Cu has the larger body of research behind its potential benefits, while AHK-Cu's research is more specifically focused on hair applications
I have been self injecting for 2 years, and started injecting my 30 year daughter last year (due to needle phobia and a rubbish GP)
Your GP can assess whether symptoms relate to B12 intake, adjust dosing, or investigate alternative causes
But since your injection bypasses the gut, that particular interaction is not an issue for the injection itself
Once absorbed, the body converts it into usable forms of B12 that support DNA synthesis, red blood cell production, and neurological function