The clinical reference is AquaGold Fine Touch (used by licensed practitioners since 2014)
B12 is an essential nutrient, and its deficiency is common, especially among individuals following restricted diets like vegetarianism or veganism, pregnant or breastfeeding women, older adults, those who have undergone gastrointestinal surgery or have gastrointestinal disorders, and people with an autoimmune condition known as pernicious anaemia
Monitor the injection site for mild tenderness
Rogan has named BPC-157, TB-500, thymosin, and ipamorelin with CJC-1295, all alongside testosterone replacement therapy and all under medical supervision (source)
However, we see over and over that practitioners never actually practice after their training
They are not medicines, are not for human or animal consumption, and are supplied with no dosing or medical guidance