what is neupogen sosy
NEUPOGENÂ® (nu-po-jen) (filgrastim) Injection. What is NEUPOGEN? NEUPOGEN is a man-made form of granulocyte colony-stimulating factor (G-CSF), which is made using the bacteria Escherichia coli. G-CSF is a substance produced by the body. It stimulates the growth of neutrophils (nu-tro-fils), a type of white blood cell important in the body's fight against infection. Who should not take NEUPOGEN?