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Subcutaneous sites include the abdomen and outer upper arms
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This synthetic tripeptide combines alanine, histidine, and lysine with copper to create a stable copper-peptide complex that researchers study in cell biology, tissue models, and hair follicle research
These injections, usually containing hydroxocobalamin or cyanocobalamin, are administered intramuscularly, thus bypassing the digestive system where the absorption problem occurs
Here is a straight, evidence-based answer, so you can decide whether B12 shots make sense for you
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