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Chang and his team rotate between injection sites, such as the outer thigh, upper arm, or lower abdomen, to promote healing and ensure consistent absorption
A subcutaneous (under-the-skin) vial format exists, but the dose volume math makes injection awkward at common doses
Keep the product name and strength consistent between refills whenever possible
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And if you have heart or kidney conditions, a conversation with your doctor before starting B12 therapy is essential
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