how to inject b12 at home injections UK I give myself a vitamin injection Safe B12 Injection Guide at

Neomycin, colchicine, para-aminosalicylic acid, or excessive alcohol intake longer than two weeks may cause malabsorption of vitamin B12. Chloramphenicol and other drugs having bone marrow suppressant properties may cause a lack of therapeutic response to vitamin B12

If you or a family member has a history of Lebers Optic Neuropathy, do not take B12, as it may cause permanent vision loss

Storage & Handling

Pernicious anemia is associated with an increased incidence of carcinoma of the stomach, but this is believed to be related to the underlying pathology and not to treatment with cyanocobalamin

In controlled laboratory research environments, NNMT activity is associated with nicotinamide metabolism, cellular energy balance, and biochemical signaling networks