does b12 injections cause constipation Shots: Vitamin B12 Benefits, Uses, Risks Are Vitamin B12 Shots Right

By maintaining NAD+ levels, the body may better manage energy production, cellular stress response and age-related cellular decline

It's a metabolic support compound that happens to include B12 as one component

Thus the best known function of B-12 (that which is indirectly involved with DNA synthesis and restoration of cell-division and anemia) is actually a facultative function which is mediated by B-12 conservation of active folate which can be used for DNA production

Because other thiols such as cysteine and glutathione could replace homocysteine, the stimulation of smooth muscle cell proliferation probably was caused by nonspecific reactivity of the sulfhydryl group of homocysteine (Lubec et al, 1996b

Approximately half of your B12 is stored in the liver