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Patients with polycythemia vera a blood disorder involving overproduction of red blood cells face additional risks since B12 stimulates red blood cell production
Talk to a qualified healthcare professional before you start, stop, or change any peptide, medication, or supplement
It is also important to consult with a healthcare provider before starting B12 shots, especially for those on medications that may interfere with B12 absorption or metabolism
Side effects are uncommon but may include mild discomfort at the injection site
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