Keywords: Vitamin B12.JPG en Vitamin B12 is a nutrient that helps keep the body's nerve and blood cells healthy and helps make DNA the genetic material in all cells Vitamin B12 also helps prevent a type of anemia called megaloblastic anemia that makes people tired and weak fa ویتامین ب12 تزریقی 2012-07-23 own آرمین Uploaded with UploadWizard Vitamin B12 Vitamins |