Vitamin B-12 injections deliver a concentrated dose of cobalamin, an essential nutrient that supports vital functions throughout the body
DIY is much less painful
Shop-bought drinks are often more regulated and provide a consistent level of specific bacterial strains, which can be safer for many people
61:104-108 Masayuki Ikeda, Makoto Asai, Takahiro Moriya, Masami Sagara, Shojiro Inou, Shigenobu Shibata, Methylcobalamin amplifies melatonin-induced circadian phase shifts by facilitation of melatonin synthesis in the rat pineal gland, Brain Research, Volume 795, Issues 12, 8 June 1998, Pages 98-104, ISSN 0006-8993, Carmen Wheatley Cobalamin in inflammation III glutathionylcobalamin and methylcobalamin/adenosylcobalamin coenzymes: the sword in the stone
dihydrofolate reductase, MTHFR
Without enough B12, the body struggles to produce healthy red blood cells, which in turn reduces the oxygen-carrying capacity of the blood