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What Causes Vitamin B12 Deficiency

Many patients may report an increase in energy and a decrease in fatigue after starting B-complex injections, usually within days to a couple of weeks of regular treatment

The NIH notes that vitamin B12 deficiency can cause fatigue, anemia, and neurological changes such as numbness or tingling, which is why visit context matters more than simply ordering a wellness shot online

these side effects will fade within a few hours

Studies indicate that the NNMT enzyme slows down the process at which our bodies metabolize fat cells

It is classified as a research chemical, intended only for laboratory research and not for human use