Remove and dispose of the drawing needle into the sharps container
For example, one study found that after taking 1,000 mcg of oral vitamin B12, only about 1.3% (13 mcg) is absorbed into the bloodstream
That gap is worth planning around: the beyond-use window of a reconstituted solution (covered in the storage section) can be shorter than the drug supply lasts, especially for the 10 mg vial, so re-order and reconstitution-volume decisions should be made against the shorter of the two limits the stability window or the drug supply not just the drug supply alone
Tap the syringe with your finger to remove any air bubbles
[21] Within cells, cyanocobalamin is converted to methylcobalamin and 5- deoxyadenosylcobalamin, coenzymes that participate respectively in homocysteine remethylation to methionine and in the isomerization of methylmalonyl-CoA to succinyl CoA, reactions essential for DNA synthesis, erythropoiesis, and myelin maintenance
You may feel some short-lived tenderness at the injection site, but most patients resume their normal routine immediately after this treatment
