How Long Does Vitamin B12 Take to Work? Timeline & Signs Performance Lab Vitamin B12 Vitamin D Life Hydroxocobalamin (B12) 1000mcg mL Injection 30mL MDV McGuff Optimal Vitamin B12 Dosage and Treating Deficiency
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vitamin b12 injection dose for adults monthly I receive monthly intramuscular vitamin B12 (cobalamin) injections, but my serum B12 level measured two weeks after the injection is only 268 pg/mL; why is it low and how should the dosing