how long before b12 injection takes effect Quickly Does a Shot Work? What to Expect How Quickly Do Vitamin B12

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

It develops when the peripheral nerves, which are located outside of the brain and spinal cord, are damaged

Even some meat eaters dont absorb it very well (4, Unlike other vitamins, the absorption of vitamin B12 depends on a protein produced in your stomach, called intrinsic factor

Always confirm the form your doctor prescribes and follow dosage instructions carefully

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