We need to watch for signs like a rash, hives, or trouble breathing and act fast if we see them
Methylcobalamin is injected intramuscularly or subcutaneously
If the patient is suspected to be sensitive to cobalt or other components of cobalamin, an intradermal test dose is recommended.[12][15] Several laboratory tests should be performed prior to treatment with cyanocobalamin, including serum vitamin B12, folate, iron, hematocrit, and reticulocyte count
A precursor to S-adenosylmethionine (SAMe) and the antioxidant glutathione, which protects liver cells from oxidative damage during accelerated fat metabolism
In fact, for every 500 g of oral B12 supplement ingested, only about 10 g is absorbed
This aggressive start is important for those with big deficiencies