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When your B12 levels are low, you may experience: Chronic fatigue and weakness Difficulty concentrating or memory loss Tingling or numbness in your hands and feet Mood swings or increased irritability Pale skin and shortness of breath B12 injections are a direct, effective way to restore optimal levels for those with malabsorption issues (such as people with gastrointestinal disorders, vegetarians, or those taking specific medications)
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For a product category where new brands appear and disappear regularly, company longevity is a relevant trust signal
Journal of Clinical Gerontology and Geriatrics, 2010
Continue supplementation indefinitely given dietary pattern
Frontiers in Bioengineering and Biotechnology, 9
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