how long for b12 injection to work Quickly Does Vitamin Vitamin B12 Shots: Uses, Intake

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The theory is that gradual dose reduction gives the body time to recalibrate appetite and metabolic signaling, rather than experiencing a sudden return to pre-treatment hunger levels

There are no major side effects reported, though patients can experience diarrhea and swelling or redness at the injection site

In fact, its been found that B12 supplements taken orally are just as effective as intramuscular shots in overcoming states of deficiency when you take up to 1,000 micrograms a day