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Rarely, hypersensitivity reactions can occur, for instance, urticaria (hives) or other allergic-type reactions have been reported in isolated cases
For a deeper dive into the research, see our guide on B12 injection efficacy, or read real patient reviews
Studies have shown that maintaining a normal level of cyanocobalamin in the blood leads to a reduction in homocysteine levels, thus contributing to slower aging of the brain
The effects of Vitamin B12 deficiency can include fatigue, weakness, numbness, tingling, memory loss, and cognitive decline
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