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However, doctors may recommend taking B12 supplements after the age of 50 years as your ability to absorb B12 decreases with age
Vitamin B Complex Dosage and Administration Usually 0.25 to 2 mL by intramuscular or slow intravenous injection
Single-use injection
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
A Vitamin B Complex injection is a sterile, injectable solution containing a combination of essential water-soluble B vitamins