b12 500 mcg injection Methylcobalamin (Vitamin B12) or cobalt deficiency MECOBALAMIN (MINE) 500 mcg/mL |

It's only been two days, I'd say that's pretty prompt service. Donna H

doi:10.1038/nature13198

People with certain allergies or sensitivities to cobalt or vitamin B12 should consult their healthcare provider before receiving injections

The non-toxicity of Vitamin B12 is confirmed by the US National Institute of Health Office of Dietary Supplements which states that the US Institute of Medicine has not established any upper limit for B12 because of its low toxicity

Functional vitamin B12 deficiency Some people can experience problems related to a vitamin B12 deficiency, despite appearing to have normal levels of vitamin B12 in their blood