do b12 injections work What are the benefits of injection? How Quickly Does a B12

Vitamin B12 is needed to form red blood cells and DNA

If you experience severe pain, signs of infection (redness, warmth, swelling), or an allergic reaction (rash, itching, difficulty breathing), seek medical attention immediately

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For Hereditary B12 Malabsorption If you suffer from Imerslund-Grasbeck disease, your vitamin B12 malabsorption will be treated with hydroxocobalamin injected into the muscle at a dose of 10 mg per day for 10 days followed by monthly injections for life

Each 5 mg vial provides approximately 10 days of dosing at 500 mcg/day or 1617 days at 300 mcg/day