how long can you store bac water — 3ML Vial How Much Bac Water for
Description
B12 shot may cause discomfort or mild side effects, including redness or swelling at the injection site, nausea, and dizziness

Nov 2013;288(5):1075-9

The patients blood may have returned to normal but that might not mean that they would do as well on tablets as they did on injections
New or unexpected symptoms : Whilst rare, allergic reactions to hydroxocobalamin can occur

It serves its intended purpose reliably in our daily lab activities

Cushman, Regeneration or Risk