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Yes, prolonged B12 deficiency can cause potentially irreversible neurological damage, including subacute combined degeneration of the spinal cord
These may include but are not limited to: Pain or swelling at the injection site Allergic reactions (extremely rare) If you experience any concerning side effects, contact your healthcare provider immediately
If you know your protocol will reach 7.5mg or higher, consider the 1ml reconstitution from the start
Immediate treatment with epinephrine and emergency medical care is essential
Several studies have shown that intramuscular and intravenous B12 delivery is more effective than oral supplementation in people with deficiency or poor absorption
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