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Tell any doctor who treats you that you are using Vitamin B12 injection
The speed of response depends on factors including the severity and duration of deficiency, the presence of neurological complications, and individual metabolic differences
Likely related to niacin-like vasodilation from rapid B12 absorption
Most older adults dont need a B12 supplement Older adults should not take B12 supplements unless they have a documented deficiency, Yourman says and only about 20 percent of adults over age 60 do, according to a report from the American Academy of Family Physicians
B12 is often added to support normal energy metabolism
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