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Several factors influence the choice of needle and syringe: Type of injection : Intramuscular (IM) or subcutaneous (SC) Gauge of the needle : Diameter of the needle Length of the needle : Determines the depth of injection Volume of the syringe : Determines the amount of B12 to be injected 3
It is ideal for those with low sun exposure
Int J Mol Sci 2018
B12 shots bypass GI absorption problems and deliver methylcobalamin (the active form) directly to your cells, making them far superior to oral B12 if you have any digestive issues or take acid-blocking medications
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