how often can vitamin b12 injections be given Should You Get A Shot For Optimal Health? Compounded Cyanocobalamin (Vitamin B12) Injection

Serum B12, methylmalonic acid, and homocysteine directly reflect B12 status and methylation capacity

For background and my updated recommendations, see: The Symptoms of Vitamin B12 Deficiency The Optimal Vitamin B12 Dosage for Adults Healthiest Food Sources of Vitamin B12 The Optimal Vitamin B12 Dosage for Kids, Pregnancy, and Seniors The Best Type of Vitamin B12: Cyanocobalamin or Methylcobalamin

The active ingredient is the same either way

Common disposal options often include taking the full container to a designated drop-off location, such as a local pharmacy, a doctors office, a hospital, or a hazardous waste collection site

The most common B12/MIC side effect is pain, redness, or itching at the injection site

This is one rabbit study, not human evidence