Available from: Bowen RA, Dowdell KC, Dale JK, Drake SK, Fleisher TA, Hortin GL, Remaley AT, Nexo E, Rao VK
Multiple-dose vials can provide more flexibility and potentially reduce cost per dose especially if you buy B12 injection bulk
It helps maintain skin health and supports the normal function of the nervous system and the gastrointestinal tract
The above is usually talked of in terms of 'anaemia', but it does show that there is a complicated link between B12, B6, folic acid, zinc and vitamin D levels, chronic disease (anaemia of chronic disease) and how the body 'manages' serum iron, ferritin, and transferrin iron saturation and keeps these in balance (or not, as in your case)
Common Side Effects Most show up during dose increases and fade after 1 to 2 weeks at the same dose