how often can you have vitamin b12 injections Shots & B12 Injections: The Good, Bad and Alternative! how often for b12 injections

Kumar A et al

Most reactions are mild and transient, resolving as your body adapts to replenished B12 levels

Advantages : Provides precise measurement markings, making it easier to measure and administer small, correct doses of B12

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