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[1] Persistently high B12 levels warrant medical investigation, as they may signal liver disease, kidney dysfunction, or certain haematological disorders

No controlled human studies document confirmed interaction profiles

Proton pump inhibitors (PPIs) and H2-receptor antagonists, used for acid reflux, reduce stomach acid production, which can impair dietary B12 absorption, though this does not directly affect injections

These injections contain a mix of vitamins, nutrients, and other ingredients that support weight loss, regulate sleep, increase energy, strengthen immunity, and offer various health benefits

Oral versus intramuscular administration of vitamin B12 for the treatment of patients with vitamin B12 deficiency: a pragmatic, randomised, multicentre, non-inferiority clinical trial undertaken in the primary healthcare setting (Project OB12)