can b12 injections cause diarrhea do Vitamin B12 Injection Vitamin B12 Side Effects

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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

Combines with dietary improvement in DIO mice to accelerate weight/fat loss and improve composition versus diet alone [3,4]

Vitamin B12 is used in the body in two forms, methylcobalamin and 5-deoxyadenosyl cobalamin