had b12 injection but still tired I Feel All the Time. Do I Need a Shot?: Shawn Veiseh, M.D.: Family Medicine feeling tired after b12 injections

If your provider recommends them, Medicare may cover B12 shots for you

For seniors with mild deficiencies, a standard oral supplement of 500 to 1,000 micrograms daily may be sufficient, as the body can only absorb a small percentage of B12 from supplements

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Vitamin B12 deficiency can cause various severe health complications

Do you experience digestive issues? Poor digestion can lead to B12 deficiency

Vitamin B12 deficiency, including with pernicious anemia Schilling test (vitamin B12 absorption test) - not commonly used How Cyanocobalamin (Dodex) works Cyanocobalamin (Dodex) is a form of vitamin B12