vitamin b12 and d3 injection Calvit-12 Injection – Powerful Calcium,
Description
However, the body is generally very efficient at excreting excess B12 through urine without any issues

Hypersensitivity reaction to cyanocobalamin
While MIC B12 injections are generally considered safe, they may cause mild side effects such as redness or soreness at the injection site
Reconstitution requires bacteriostatic water (water containing 0.9% benzyl alcohol as a preservative): Standard Reconstitution: Add 2 mL of bacteriostatic water to a 5 mg vial, creating a concentration of 2.5 mg/mL (2,500 mcg/mL)

However, we now know that these long needles are excessive

This product should only be handled by licensed and qualified professionals
