TheraRadar

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Data updated: Mar 10, 2026

ZARXIO

FILGRASTIM-SNDZ
Oncology Approved 2015-03-06

Zarxio is a leukocyte growth factor used to reduce the risk of infection and clinical complications in patients with various forms of neutropenia. It is indicated for patients with nonmyeloid malignancies receiving myelosuppressive chemotherapy or undergoing bone marrow transplantation, as well as those with acute myeloid leukemia. The drug also serves to mobilize hematopoietic progenitor cells for collection and to improve survival in patients experiencing acute exposure to myelosuppressive doses of radiation.

Source: FDA Label • Novartis • Leukocyte Growth Factor

How ZARXIO Works

Zarxio functions as a colony-stimulating factor that binds to specific receptors on hematopoietic cells to stimulate the production and activation of neutrophils. By regulating bone marrow activity, the drug promotes the proliferation and differentiation of neutrophil progenitors into functional white blood cells. This process enhances the immune system's end-cell functions, including phagocytic ability and antibody-dependent killing, while having minimal effect on other cell lineages.

Source: FDA Label
1
Indication
--
Phase 3 Trials
11
Years on Market

Details

Status
Prescription
First Approved
2015-03-06
Routes
INJECTION
Dosage Forms
INJECTABLE

Companies

Active Ingredient: FILGRASTIM-SNDZ

ZARXIO Approval History

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What ZARXIO Treats

7 indications

ZARXIO is approved for 7 conditions since its original approval in 2015. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Febrile Neutropenia
  • Acute Myeloid Leukemia
  • Neutropenia
  • Congenital Neutropenia
  • Cyclic Neutropenia
  • Idiopathic Neutropenia
  • Acute Radiation Syndrome
Source: FDA Label
Biosimilar for Neupogen

ZARXIO is a lower-cost alternative to Neupogen with no clinically meaningful differences. Requires prescriber approval to substitute.

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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.

ZARXIO FDA Label Details

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Indications & Usage

FDA Label (PDF)

ZARXIO 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 malign...

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Data Sources

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