aching arm after b12 injection Do Injections Hurt? Painful Shots Tips · PA Relief Common Mistakes in B12 Injections

An 8mg dose only requires 80 units, which fits easily in a single syringe

For 500mcg dose, draw 0.25ml (25 units)

Vitamin B12 helps make red blood cells and nerve tissue

For those with anemia or known deficiencies, B12 injections can be particularly effective in restoring balance

Still, side effects from B12 supplements are possible, especially at higher doses, and include: Headache Nausea Vomiting Fatigue Weakness Diarrhea Tingling in the hands and feet Nasal spray Vitamin B12 is also available in a nasal spray

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