Vitamin B-12 helps your body use fat and carbohydrates for energy and to make new protein
Low energy levels
The B Vitamins are co-factors in the production of red blood cells, DNA synthesis as well as the production of the myelin sheath that surrounds the nerves
That is the whole story, start to finish: a stubborn idea from 1975, a researcher who spent his life on it, a compound that healed everything in rats, a human trial whose result nobody saw for twenty years, a molecule no company can own so no company will finish testing, and a stack of the most basic questions is it safe, at what dose, made by whom, and how does it actually work that still have no answers
If the patient is pregnant or breastfeeding, inform the prescriber usually, injections continue as needed, and B even passes into breast milk (beneficial)