Description
Vitamin B12 (cobalamin) was identified in 1948 as the nutrient in the liver that prevented pernicious anemia. It is essential for DNA synthesis, red blood cells, and nerve insulation (myelin sheath).
Health Benefits
- Preventing B12 deficiency: Prevents anemia, nerve damage, and cognitive impairment.
- Conditions: Helps with depression, fatigue, diabetic neuropathy, low sperm counts, and more.
Available Forms
- Cyanocobalamin and hydroxycobalamin: Common but inactive forms.
- Methylcobalamin and adenosylcobalamin: Active forms, preferred in sublingual tablets.
Dosage
- RDA: 2.4 mcg.
- Deficiency treatment: 2000 mcg daily for one month, then 1000 mcg daily.
- Vegetarians: At least 300 mcg per day.