The vitamin can be stored in the liver for a long time, so it may take a few years for a deficiency to develop ( Summary Vitamin B12 is a water-soluble vitamin that plays an important role in brain function and red blood cell production
If you lack reliable refrigerationsuch as during travel or relocationinform your provider immediately
A vitamin B12 deficiency affects energy levels and immune health and may cause neurological problems like numbness and tingling in your hands and feet
Some people may experience bronchospasm, which means the airways tighten and make breathing hard
Safety Considerations Safety remains a paramount concern when evaluating new therapeutic agents
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