sore arm after b12 injection pain Why does my arm hurt after a shot? Vitamin B12 Injections Sacramento California

In many cases, B12 shots are available by prescription only

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Common research protocols cited in the peptide community use 1 to 2 mg, 3 to 5 times weekly, over 8 to 12-week cycles

Injectable B12 has few direct drug interactions, but certain medications can interfere with B12 absorption or measurement: Chloramphenicol: This antibiotic may antagonise the haematological response to B12 in some patients, potentially preventing the expected rise in red blood cell count

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Reconstituted research peptides are generally used within a few weeks