Vitamin B12 is a nutrient that your body doesn't make, so you have to get it from animal products, such as meats, dairy, and eggs, or from supplements
10.4414/smw.2017.14421 36 MoherD.LiberatiA.TetzlaffJ.AltmanD
The exact dose depends on the patients condition and how they respond to treatment
These include vitamin B12 deficiency and malabsorption that is caused by the following medical conditions, according to the NIH [1]: Pernicious anemia Tropical sprue Pancreatic insufficiency Surgery in the gastrointestinal tract Certain medications Deficiency in the diet Side effects of B-12 injections Also, according to the NIH, vitamin B-12 injections have some potential side effects, including [1]: Diarrhea Itching Swelling Risk of allergic reaction and anaphylaxis Can Vitamins Aid in Weight Loss
Vitamin B 12 is available only in animal foods (meat and dairy products) or yeast extracts (such as brewer's yeast)
The Verdict SEPTEMBER 29, 2020 It is an age-old question