why is b12 injections bad for you Sublingual vs. B12 Injections: Which Option Right You? – WhyNotNatural B12 Injections - Modern Edge
Description
Another frequently asked question is, "Does B12 expire?" Like all medications and supplements, B12 injections have a limited shelf life: Expiration Dates: Always check the expiration date labelled on your B12 injection vial

Inadequate levels of vitamin B complex can lead to weakened muscles, sluggish reflexes, or trembling sensations

Reference ranges differ between labs
Toxicol Pathol
