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Mechanism of Action: The NAD+ Preservation
A 3-ounce serving of cooked beef liver has 70.7 micrograms of vitamin B12
Why Do B12 Deficiencies Happen
People who have had allergic reactions to cobalt or cobalamin (the form of B12 in injections) should avoid them
In severe cases of vitamin B12 deficiency, like pernicious anemia, regular injections may be required to maintain adequate levels
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