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No Phase 3 trials were undertaken

Another study conducted by the University of California found that B12 supplements improved energy levels and reduced fatigue in individuals with chronic fatigue syndrome

This allows time for the injected solution to disperse into the surrounding tissue rather than tracking back up the needle path

The antibodies also block a critical protein called intrinsic (in-TRIN-sic) factor

Moreover, individuals who are malnourished, have cancer, are elderly, pregnant, or are alcoholics are also at higher risk in suffering the lack of vitamin B12

Most patients feel the energy lift within 24 to 48 hours