how long does a b12 injection take to work Are Vitamin Shots Right for You? Benefits of B12 Injections for

Each summary identifies the experimental model used

Simultaneously, innovations in injection devices and formulations continue to make injectable methods more user-friendly and less invasive

High-concentration Vitamin B12 (3000 mcg/mL) injectable solution

Intramuscular shots put B12 right into the muscle

Others who might be prescribed B12 shots are those at the highest risk for a B12 deficiency, including: Vegans, since vitamin B12 is found only in animal products People ages 60 and up since their bodies don't absorb B12 as efficiently People with Crohn's disease or pancreatic disease, since they prevent nutrient absorption People who had weight-loss surgery, which decreases B12 absorption People with an eating disorder People with HIV People with diabetes Since a mild B12 deficiency might not cause symptoms, it can go undetected for years since levels are not checked during routine blood work

Start with 0.5 percent and increase to 1 or 2 percent if tolerance is good and results warrant intensification