Important safety information and common side effects The most common side effect of B12 injections is irritation at the injection site
Vitamin B5 (pantothenic acid) is a component of coenzyme A, crucial for numerous metabolic pathways and the proper functioning of the citric acid cycle
Strict vegetarians and vegans, or people with conditions that prevent them from absorbing nutrients from food, are the most likely people to be deficient
For example, your order may consist of (1) several different items, (2) a quantity of the same item, or, (3) a single item with several component parts the size of which might require them to be shipped in separate packages
When serum B12 is normal but MMA is elevated, this may indicate a functional B12 deficiency and may be treated with high-dose injections of vitamin B12, which help bypass barriers to absorption