how many ml of b12 should i inject Cyanocobalamin (B12) Injection 1000 mcg/mL, Multiple Dose Vial 1 mL, 25/Tray B12 Injection Dosage and Frequency:

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Therefore, if you are at high risk of a B12 deficiency, consult with your healthcare provider, who can run a blood test to check your B12 levels

For individuals requiring supplementation due to confirmed deficiency or malabsorption, therapeutic doses vary considerably depending on the underlying cause: Dietary deficiency : 50150 micrograms daily orally, or cyanocobalamin tablets as prescribed Pernicious anaemia : Initially hydroxocobalamin 1 mg intramuscularly three times weekly for two weeks, then maintenance injections every two to three months [3] Neurological involvement : More intensive regimens may be required, with hydroxocobalamin injections on alternate days until symptom improvement [3] NICE guidance emphasises that supplementation should be evidence-based rather than speculative