Scand J Rheumatol 1976;5:241-7
However, some rare side effects of too much vitamin B12 can include: Headache Weakness Nausea Diarrhea Tingling sensations in the hands and feet Allergic reactions or skin rash (uncommon) When To Seek Medical Advice Risk of vitamin B12 deficiency: Groups at a higher risk of vitamin B12 deficiency include older adults, people who only eat plant-based foods (vegans and vegetarians), and those with certain chronic conditions (gastrointestinal disorders that can affect vitamin absorption)
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Selective increase in lipid peroxidation in the inferior temporal cortex in Alzheimers disease
Oral manifestations of vitamin B12 deficiency associated with pernicious anemia: a case report
News Release February 05, 2012 Fish oil and multivitamins most popular supplements in ConsumerLab.com survey -- Internet most popular place to shop WHITE PLAINS, NEW YORK FEBRUARY 5, 2012 A survey of over 10,000 savvy consumers of supplements shows the most popular supplements to be fish oil, multivitamins, vitamin D, calcium and CoQ10, in that order