Sometimes its easier to do by yourself than other times
Notably, GHK-Cu stimulates collagen and glycosaminoglycan synthesis in fibroblasts, promotes angiogenesis (formation of new blood vessels), and exhibits antioxidant and anti-inflammatory properties (for example, it suppresses NF-B activity) [1]
Other carnitine compounds exist, including D-Carnitine, Acetyl-L-carnitine (ALCAR) and L-carnitine L-Tartrate (LCLT)
In 2009, a double-blind randomised-controlled trial (RCT) found significant reductions in duration of outbreaks, the number of ulcers and the level of pain in those on B12, 1000 g per day sublingually (form not reported), regardless of B12 level
Switching is a clinical decision your provider makes based on your current dose, titration step, and reason for switching