Vitamin B12

Vitamin B12 helps to prevent and cure canker sores.


Benefits of Vitamin B12 are:

  • Prevention and cure of canker sores
  • Proper function and development of the brain, nerves, blood cells, and many other parts of the body.
  • B12 is also beneficial to the treatment and prevention of anemia, or low red blood cells.
  • Because B12 is involved in energy production, it can be beneficial to individuals suffering from fatigue.
  • Vitamin B12 is required for the proper function and development of the brain, nerves, blood cells, and many other parts of the body.
Recommended dosage of Vitamin B12:
  • For everyday health take:
  • For healing canker sores take:
  • 5 mg to 10 mg a week
  • Infants 0-6 months, 0.4 mcg
  • infants 7-12 months, 0.5 mcg
  • children 1-3 years, 0.9 mcg
  • children 4-8 years, 1.2 mcg
  • children 9-13 years, 1.8 mcg
  • older children and adults, 2.4 mcg
  • pregnant women, 2.6 mcg
  • Breast-feeding women, 2.8 mcg. Because 10% to 30% of older people do not absorb food-bound vitamin B12 efficiently.
  • Those over 50 years should meet the RDA by eating foods fortified with B12 or by taking a vitamin B12 supplement.
  • Supplementation of 25-100 mcg per day has been used to maintain vitamin B12 levels in older people.
Possible side effects of too much Vitamin B12:
  • Being too awesome
  • Never getting another canker sore
  • Allergic reactions to B12 include itching, hives, skin rash, swelling of the face, lips, eyelids and tongue, chest tightness, problems breathing and wheezing.
  • High doses of B-12 may cause several gastrointestinal side effects including stomach upset, loose stools, diarrhea or constipation.
  • Pregnancy and breast-feeding: Vitamin B12 is LIKELY SAFE for pregnant or breast-feeding women when taken by mouth in the amounts recommended. The recommended amount for pregnant women is 2.6 mcg per day. Breast-feeding women should take no more than 2.8 mcg per day. Don’t take larger amounts. The safety of larger amounts is unknown.
  • High numbers of red blood cells (polycythemia vera): The treatment of vitamin B12 deficiency can unmask the symptoms of polycythemia vera.
  • Abnormal red blood cells (megaloblastic anemia): Megaloblastic anemia is sometimes corrected by treatment with vitamin B12. But this can have very serious side effects. Don’t attempt vitamin B12 therapy without close supervision by your healthcare provider.
  • Leber’s disease, a hereditary eye disease: Do not take vitamin B12 if you have this disease. It can seriously harm the optic nerve, which might lead to blindness.
  • Allergy or sensitivity to cobalt or cobalamin: Do not use vitamin B12 if you have this condition.


Food sources of Vitamin B 12 are:

  • Dairy
  • Fish
  • Meat (especially liver)
  • Poultry
  • Eggs
  • Milk


References and links to further materials: