vitamin b12 injection needle Dr. prescribed injections. Pharmacy only gave me vials. Where do you get your needles and syringes? What size?? Where do I inject? : r/B12_Deficiency b12 injections needle size B12

Seek medical advice if you are taking B12 supplements and experience: Persistent skin changes, particularly acne-like eruptions or rosacea worsening Unexplained headaches or dizziness that coincide with supplement use Gastrointestinal symptoms including nausea or abdominal discomfort Any allergic reactions such as rash or itching Call 999 or go to A&E immediately if you experience: Difficulty breathing Swelling of the face, lips, tongue or throat Severe rash or itching Other symptoms of severe allergic reaction after taking B12 These symptoms warrant review of your supplementation regimen

Difficulty swallowing or breathing (anaphylaxis) is also possible

International Journal of Molecular Sciences , 19(7), 1987

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Large human trials and better active surveillance would help answer these questions