b12 subcutaneous injection video What Are Injections? What Happens If You Inject

Route Oral Published Dose Context Published trials used 0.25 mg to 30 mg/day

Treatment frequency depends on your individual needs and should be discussed during your consultation

Vitamin B12 shot side effects Most people tolerate vitamin B12 injections well, but possible side effects include: Mild: soreness or redness at injection site, mild diarrhea, nausea, headache, itching Rare but serious: allergic reactions (rash, swelling, difficulty breathing), low potassium (hypokalemia), dizziness or heart rate changes Get emergency medical help if you have signs of an allergic reaction to Vitamin B12: hives

Full-text article Neelakantan H, Brightwell CR, Graber TG, et al

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