course of vitamin b12 injections Online Injection Training Vitamin B12 Course | B12

A rat study reported 38.4% oral bioavailability, while human oral and subcutaneous exposure remain unknown

I always warm the ampoule before injecting ,tuck in my bra or waistband while Im prepping all the other bits,I dont use swabs as I know I don't need them ,nurses also don't use them often these days,they tend to sting unless the swabbed areas completely dried before injecting

Allow skin to air dry completely (alcohol must evaporate to prevent stinging)

Benefits of Vitamin B12 Shots How often can you get a B12 shot

Needle size, injection site, and dosage will differ for every individual

Its not a one-size-fits-all answer