B12 injections have many benefits and are often prescribed for deficiencies that cause fatigue, shortness of breath, diarrhea, numbness and neurological damage
Will a B12 Shot Make Me Feel Better Within 24 Hours
Individuals most likely to benefit include: Those with pernicious anemia People with gastrointestinal disorders (e.g., Crohns disease, celiac disease, chronic gastritis) Patients following bariatric (weight loss) surgery Older adults with absorption difficulties Strict vegetarians or vegans at risk for deficiency People taking medications that can decrease vitamin B12 levels Laboratory testing usually confirms B12 deficiency before starting injections
The Mayo Clinic indicates high doses of vitamin B-12, such as those used to treat a deficiency, might cause: Headache Nausea and vomiting Diarrhea Fatigue or weakness Tingling sensation in hands and feet Healthline says: In very rare cases, some people can experience side effects caused by allergic reactions or sensitivity In addition to helping athletes build muscle, vitamin B12 plays a role in maintaining nervous system function and brain health
Energy and mood benefits may gradually decrease over time, which is why ongoing maintenance injections are often recommended
