As of April 22, 2026, it was removed from FDA Category 2, but the FDA's Pharmacy Compounding Advisory Committee will not consider it for the 503A bulks list until the July 23, 2026 meeting
Once opened, it supports bacterial growth immediately
Patients with more severe or longstanding deficiency may take longer to notice the full benefit
I have also accessed other sites for my B12 injections, including, the upper arm (deltoid), thigh (vastus lateralis), and the buttocks (dorsogluteal)
Recap the vial with the original stopper or a sterile cap after every withdrawal
it inhibits bacterial growth, which is what allows a multi-dose vial to be punctured weekly over several weeks