what is in a vitamin b12 injection for Cyanocobalamin 1,000 mcg, 25/Box (Rx) — Mountainside Medical Sandoz Vitamin B12 Injectable Solution
Description
In sporadic cases, allergic reactions can occur

As detailed by the NIH , these include: Pernicious Anemia: An autoimmune condition that destroys stomach cells producing intrinsic factor, requiring lifelong injections

For most people with a vitamin B12 deficiency, oral supplements are an effective way to bring your levels up to normal, says Foxx, and research backs this up (2)

Outer Upper Arms: The area is easily accessible for self-injection and often used for smaller dose administrations

How Soon Do You Feel Less Tired After A B12 Injection Many people notice fatigue fading pretty fast
