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doi:10.1016/j.jnutbio.2013.03.001
Common experiences after the first injection include: Mild soreness or redness at the injection site (usually resolves within 12 days) Slight improvement in energy levels or mood No immediate noticeable change (particularly common if deficiency is severe) Rarely, mild side effects such as headache or dizziness Some patients report their urine becoming brighter or more intensely coloured following injection, which occurs because excess B12 is excreted renally
Animal studies show improvements in tissue regeneration and reduced inflammation
Understanding the differences between these medications is critical because the price points, effectiveness profiles, and regulatory statuses vary dramatically
