Vitamins, by definition, are compounds that are essential for life and arent created by your body you have to get them from foods or supplements
For skin , GHK-Cu has solid evidence for collagen and repair
Many people are candidates for a b12 shot, but those who are over 50, smoke, abuse alcohol, have been diagnosed with diabetes, or stick to a vegetarian or vegan diet can all be at an increased risk of a vitamin b12 deficiency and greatly benefit from this shot
5-Amino-1MQ Dosage in Published Research Doses reported in the published preclinical literature are expressed in mg/kg/day administered by oral gavage in mouse models, with cell-based studies reporting micromolar concentrations in culture medium
If you do not know what MTHFR is, or would like to learn more about MTHFR, read our introduction to MTHFR here