b12 injection seattle Shots for Wellness Seattle, WA B12 Injections: Ultimate IV &
Description
B12 shots skip the digestive system as they enter the bloodstream directly

Elevated methylmalonic acid above 0.4 micromoles per liter confirms functional B12 deficiency even when serum levels appear adequate

doi: 10.1016/0378-4347(87)80104-4
it feels uncomfortable when the needle goes in, seems to hit bits of tissue fibre which block the needle
