For example: Fatigue, unexplained weight loss, or abdominal pain may indicate liver disease or cancer Easy bruising, night sweats, or feeling full quickly (early satiety) may suggest a myeloproliferative disorder Swelling in the legs, reduced urine output, or persistent nausea may point to kidney disease In cases of very high B12 from injections (not oral supplements), some people have reported headache, nausea, diarrhea, facial flushing, or skin rash
doi:10.1016/j.repbio.2019.07.005
Should I purchase a smaller bottle
A healthcare provider administers B12typically in the methylcobalamin or cyanocobalamin formvia intramuscular injection, usually in the upper arm or hip area
Lancet 1990
Step 7: Dispose of the used syringe in your sharps container