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I have experienced chronic fatigue, fibromyalgia and brain fog for years

Vitamin B12 has been shown to be effective in treating the symptoms of anemia, ataxia and low blood pressure

Oral B12 supplementation (typically 50-150 micrograms daily) may be appropriate for dietary deficiency in vegans or vegetarians without malabsorption issues

This includes vegans and vegetarians, older adults, individuals with atrophic gastritis, pernicious anemia, gastrointestinal disorders, those who have had gastrointestinal surgery and people who take certain medications including, but not limited to, estrogen (HRT), and birth control pills

Allergic reactions or severe side effects are rare but should be reported to a healthcare provider