If you have any sort of GI issue (GERD, reflux, SIBO/SIFO, yeast problems, chronic constipation, etc.) you will have problems taking oral forms of vitamin B12
The question of whether you can stack MOTS-c 5-Amino-1MQ is answerable only because their mechanisms don't overlap
GHK-Cu enters cells bound to copper, scans DNA, and resets over 4,000 genesturning on collagen/elastin factories (types I, III, V), growth factors (VEGF for blood vessels, TGF-beta for remodeling), and antioxidants while shutting down inflammation (NF-B, TNF-alpha) and junk protein buildup (proteasome boost)
Explore them and their effects in the following section