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vitamin b12 injection side effect from injections can b12 injections have side effects B12 Shots at Home: How, Where & How Often to Inject Yourself What Does a B12 Shot
Description
Despite its importance, many people find it difficult to get enough B-12 from diet alone, leading to fatigue, weakness, and a sluggish metabolism

For instance, those with severe vitamin B12 deficiency may require weekly or biweekly shots until their blood levels return to normal
is needed to form red blood cells and DNA

Modern Nutrition in Health and Disease
However, there are a few considerations to keep in mind
Adequate levels support normal energy metabolism, which may help reduce fatigue related to deficiency
