where to inject b12 shots Ivy Grove Surgery : Self-administration of injection How to Give a B12

Signs include feeling very tired, weak, and having nerve problems

For severe cases, high-dose injections are recommended

Intramuscular (IM) B12 injections using hydroxocobalamin, the preferred licensed form in the UK are recommended when: Oral supplementation has failed to correct a documented deficiency The patient has difficulty adhering to daily oral regimens Serum B12 levels remain persistently low despite adequate oral dosing There is clinical evidence of neurological or haematological complications In line with BNF guidance, the standard IM regimen for confirmed deficiency without neurological involvement is a loading course of 1 mg hydroxocobalamin on alternate days for two weeks , followed by maintenance of 1 mg every three months

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Altered immune function may contribute to ulcer formation