Most often, B12 is administered via an intramuscular (IM) injection into the upper arm or glute
Pernicious anaemia is caused by a deficiency in vitamin B12, due to atrophic gastritis, an autoimmune condition (immune system destroys self), in this case the parietal cells of the stomach that produce intrinsic factor, a glycoprotein that binds to vitamin B12 in the stomach and is essential for normal absorption of vitamin B12 in the small intestine into the blood
For external use on scalp only
Practically, any before & after changes attributed to MIC/B12 should be viewed as adjunctive to fundamentalscalorie deficit, adequate protein, resistance training, daily steps, and sleeprather than a guaranteed pharmacologic effect
People with diabetes
It should only be handled by professionals who are licensed and qualified