where do i give myself a b12 injection How To Self-Inject Instruction Guide for Intramuscular (IM)
Description
Choose an Injection Site Intramuscular injections are typically administered in one of three locations: Upper arm (deltoid): Outer, rounded part of the upper arm, about halfway between the shoulder and elbow
Blood Test (if required) In some cases, we may recommend a blood test to confirm Vitamin B12 deficiency before proceeding with the injection

is a water-soluble vitamin

An IV infusion bypasses the gut entirely, delivering B12 alongside hydration and supportive vitamins like vitamin C and zinc directly into the bloodstream