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Hydroxocobalamin 1mg intramuscular injections reactivate metabolic pathways after chronic deficiency, potentially causing temporary symptoms during adjustment Common side effects include injection site pain, headaches, and nausea, typically resolving within 2472 hours Rapid red blood cell production may increase demand for folate and iron, occasionally creating relative deficiencies in these co-factors Serious reactions requiring urgent assessment include difficulty breathing, chest pain, severe weakness, or progressive neurological symptoms Recovery follows a predictable pattern: blood cell improvement within 35 days, haemoglobin normalisation over 12 months, neurological recovery potentially taking several months Table of Contents Why Do I Feel Worse After My B12 Injection
Warnings and Precautions Hypokalemia: B12 therapy may cause a drop in potassium levels (hypokalemia), particularly during early treatment in patients with significant B12 deficiency
Scientific Reports, 6, 37664
Vitamin Shots can be combined with other treatments for enhanced results
Such conditions include autoimmune conditions such as Crohns disease, celiac disease and ulcerative colitis, which all prevent the body from adequately absorbing nutrients from the intestines
doi: 10.14283/jfa.2018.45
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