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J Neurosci 15:50965107 He SY (1995) Methamphetamine-induced toxicity in cultured adult rat cardiomyocytes

Energy benefits, especially in B12-depleted patients, are often felt within the first 1 to 2 weeks

[DOI] [PubMed] [Google Scholar] 145.Baylis C., Vallance P

The efficacy of these products has not been confirmed by the FDA-approved research

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

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