Because your skeletal muscles are filled with mitochondria (the portion of your cell responsible for energy production in your body) and we know that B12 directly acts in these mitochondria
Contraindications Given the limited safety data, conservative contraindications would include pregnancy or plans to become pregnant, breastfeeding, age under 18, severe liver or kidney disease, and any condition requiring medications with unknown interaction potential
If you fall into any of these categories, it's worth discussing B12 testing with your healthcare provider
The right type depends on the patients health, how severe their deficiency is, and the doctors advice
Intravenous B12 Administration For those with severe vitamin B12 deficiency, getting B12 through an IV is a quick and effective way to treat it