When you inject into the arm (deltoid) your main goal will be to penetrate the muscle and then slowly deliver the vitamin B12 into the muscle, and then extract the needle at the same 90 degree angle that you inserted it
This product should not be used as a substitute for a varied, balanced diet
In contrast, for intramuscular, all it takes is a direct jab on the muscles
But I also think that there are places, such as with experimental treatments like with BPC-157, we probably need to press pause on at least until theres some actual human trials that trend towards FDA approval and keep things where they are today
In endothelial cell models, BPC-157 enhanced ERK1/2 phosphorylation in a dose-dependent manner, increasing cellular proliferation, migration, and vascular tube formation via downstream transcription factors c-Fos, c-Jun, and EGR-1
doi: 10.3389/fphar.2017.00904