are vitamin b12 injections prescription only Do You Need a for Injections? monthly. Injectable Vitamin B12 | OTC

And just to add another curve ball, low serum levels of vitamin B12 are also associated with a higher risk of autism

Needle sizing follows a flipped scale: a higher gauge number actually means a narrower shaft, so a 25-gauge needle is finer than a 21-gauge one

Silverstein said he decided to investigate the over-prescribing of B12 shots, because "as an internal medicine resident, I have seen many patients come into the emergency department, and they were getting B12 injections without having a really good reason for it." His study could not determine why family physicians were prescribing it inappropriately including whether it was initiated by the doctor or at the request of the patient

Greger may be referring, watch the above video

It's whether the research question justifies the added complexity