Pay in 4 interest-free payments of $5.95 Learn more
Ships within 48 hours · Estimated delivery Oct 10 - Oct 15
This makes B12 injections an optimal choice for those with serious deficiencies and sensitive stomachs
2 mg subcutaneously, once daily, at bedtime in a fasted state
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
Limited long-term human safety data
It is a life-threatening medical emergency
