B12
Medical abbreviation · Drug
| Stands for | Vitamin B12 (cyanocobalamin) |
|---|---|
| Categories | Medical |
B12 stands for Vitamin B12 (cyanocobalamin), a drug abbreviation.
Vitamin needed for red blood cell formation and nerve function, given as oral tablets, nasal spray or injections to treat deficiency from pernicious anemia, gastric surgery, vegan diets or long-term metformin and acid-suppressant use.
Example: B12 1,000 mcg IM daily x 7, weekly x 4, then monthly for pernicious anemia.
Usage notes
High-dose oral B12 (1,000 to 2,000 mcg daily) is effective for most people because about 1 percent is absorbed without intrinsic factor. Deficiency can cause irreversible nerve damage if untreated, and folic acid alone can correct the anemia while nerve damage progresses. Hydroxocobalamin is the form used in many countries and as a cyanide antidote.
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This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.