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how often should you have b12 injection Dosage and Frequency: 7 Guidelines for Adults How Often Should You Have
Description
New insights into erythropoiesis: the roles of folate, vitamin B12, and iron

If you need daily or weekly injections, it will add up quickly

The bottom line While vaccines are generally safe with small to moderate amounts of alcohol, its best to wait a day or two until the side effects dissipate
Metformin can cause vitamin B12 deficiency , especially when it is taken for several years or at higher daily doses

Oysters, crabs, and lobsters are all good sources, too

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