Amgen manufactures pegfilgrastim under the brand name Neulasta, which was mainly worked on by Martine Allard, while Roche manufactures it under the name Neulastim. In India it is also marketed by Abbott Healthcare under the brand name Imupeg. The drug is prepared by coupling a 20 kDa polyethylene glycol (PEG) molecule to the N-terminus of the filgrastim protein. Pegfilgrastim has a human half-life of 15 to 80 hours, much longer than the parent filgrastim (3–4 hours).
Pegfilgrastim treatment can be used to stimulate bone marrow to produce more neutrophils to fight infection in patients undergoing chemotherapy.