what does b12 injections do to your body 7 Benefits of for Health, Energy and Beauty B12 Injections vs Pills: Richmond's
Description
When an individual has an MTHFR polymorphism, their body struggles to efficiently convert synthetic cyanocobalamin (the cheap form of B12 found in most standard supplements and fortified foods) into the active methylcobalamin required by the cells

doi:10.1093/jn/131.2.291 13

There is also a paediatric version of this book "Could It Be B12

Energy Boost from Vitamin B12 Have you ever felt like youre dragging despite getting a full nights sleep
