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Data updated: Mar 10, 2026

NEUPOGEN

FILGRASTIM
Oncology Approved 1991-02-20

Neupogen (filgrastim) is a leukocyte growth factor used to manage neutropenia and reduce the risk of infection in various clinical settings. It is primarily indicated for patients with nonmyeloid malignancies receiving myelosuppressive chemotherapy or undergoing bone marrow transplantation, as well as those with acute myeloid leukemia. Additionally, the drug is used to mobilize progenitor cells for collection and to treat patients with chronic hereditary neutropenia or acute exposure to myelosuppressive radiation.

Source: FDA Label • Amgen • Leukocyte Growth Factor

How NEUPOGEN Works

Filgrastim acts as a colony-stimulating factor by binding to specific receptors on the surface of hematopoietic cells. This binding stimulates the production, maturation, and activation of neutrophils within the bone marrow. By regulating neutrophil progenitor proliferation and enhancing functions like phagocytosis, the drug increases the body's ability to fight infections while having minimal impact on other blood cell types.

Source: FDA Label
6
Indications
--
Phase 3 Trials
2
Priority Reviews
35
Years on Market

Details

Status
Prescription
First Approved
1991-02-20
Routes
N/A
Dosage Forms
SYRINGE, VIAL

Companies

Active Ingredient: FILGRASTIM

NEUPOGEN Approval History

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What NEUPOGEN Treats

7 indications

NEUPOGEN is approved for 7 conditions since its original approval in 1991. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Febrile Neutropenia
  • Acute Myeloid Leukemia
  • Neutropenia
  • Hematopoietic Syndrome of Acute Radiation Syndrome
  • Congenital Neutropenia
  • Cyclic Neutropenia
  • Idiopathic Neutropenia
Source: FDA Label

NEUPOGEN Biosimilars

4 FDA-approved

These 4 alternatives require prescriber approval to substitute for NEUPOGEN.

What are biosimilars? Lower-cost alternatives to NEUPOGEN with no clinically meaningful differences.

Auto-substitute OK = FDA "interchangeable" designation — pharmacist can switch without calling the doctor.

Drugs Similar to NEUPOGEN

FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.

NIVESTYM
FILGRASTIM-AAFI
6 shared
Pfizer
Shared indications:
Febrile NeutropeniaAcute Myeloid LeukemiaNeutropenia +3 more
NYPOZI
FILGRASTIM-TXID
6 shared
TANVEX BIOPHARMA USA INC
Shared indications:
Febrile NeutropeniaAcute Myeloid LeukemiaNeutropenia +3 more
RELEUKO
FILGRASTIM-AYOW
6 shared
KASHIV BIOSCIENCES LLC
Shared indications:
Febrile NeutropeniaAcute Myeloid LeukemiaNeutropenia +3 more
ZARXIO
FILGRASTIM-SNDZ
6 shared
Novartis
Shared indications:
Febrile NeutropeniaAcute Myeloid LeukemiaNeutropenia +3 more
GRANIX
TBO-FILGRASTIM
2 shared
SICOR BIOTECH
Shared indications:
NeutropeniaFebrile Neutropenia
ARMLUPEG
PEGFILGRASTIM-UNNE
1 shared
Lupin
Shared indications:
Febrile Neutropenia
CEFEPIME AND DEXTROSE IN DUPLEX CONTAINER
CEFEPIME HYDROCHLORIDE
1 shared
B BRAUN
Shared indications:
Febrile Neutropenia
CEFEPIME HYDROCHLORIDE
CEFEPIME HYDROCHLORIDE
1 shared
QILU ANTIBIOTICS
Shared indications:
Febrile Neutropenia
CEFEPIME HYDROCHLORIDE IN PLASTIC CONTAINER
CEFEPIME HYDROCHLORIDE
1 shared
SAMSON MEDCL
Shared indications:
Febrile Neutropenia
CEFEPIME IN PLASTIC CONTAINER
CEFEPIME HYDROCHLORIDE
1 shared
Baxter
Shared indications:
Febrile Neutropenia
DAURISMO
GLASDEGIB MALEATE
1 shared
Pfizer
Shared indications:
Acute Myeloid Leukemia
FULPHILA
PEGFILGRASTIM-JMDB
1 shared
Viatris
Shared indications:
Febrile Neutropenia
FYLNETRA
PEGFILGRASTIM-PBBK
1 shared
KASHIV BIOSCIENCES LLC
Shared indications:
Febrile Neutropenia
GRAFAPEX
TREOSULFAN
1 shared
MEDEXUS
Shared indications:
Acute Myeloid Leukemia
IDAMYCIN PFS
IDARUBICIN HYDROCHLORIDE
1 shared
Pfizer
Shared indications:
Acute Myeloid Leukemia
IDHIFA
ENASIDENIB MESYLATE
1 shared
Bristol-Myers Squibb
Shared indications:
Acute Myeloid Leukemia
KOMZIFTI
ZIFTOMENIB
1 shared
KURA
Shared indications:
Acute Myeloid Leukemia
MYLOTARG
GEMTUZUMAB OZOGAMICIN
1 shared
Pfizer
Shared indications:
Acute Myeloid Leukemia
NEULASTA
PEGFILGRASTIM
1 shared
Amgen
Shared indications:
Febrile Neutropenia
NIPENT
PENTOSTATIN
1 shared
Pfizer
Shared indications:
Neutropenia
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Active Pipeline

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

NEUPOGEN FDA Label Details

Pro

Indications & Usage

FDA Label (PDF)

NEUPOGEN is a leukocyte growth factor indicated to Decrease the incidence of infection‚ as manifested by febrile neutropenia‚ in patients with nonmyeloid malignancies receiving myelosuppressive anti-cancer drugs associated with a significant incidence of severe neutropenia with fever Reduce the time to neutrophil recovery and the duration of fever, following induction or consolidation chemotherapy treatment of patients with acute myeloid leukemia (AML) Reduce the duration of neutropenia and neutropenia-related clinical sequelae‚ e.g.‚ febrile neutropenia, in patients with nonmyeloid malignanci...

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.