Question 1

What is Zarxio?

Accepted Answer

Zarxio is a medication that acts as a leukocyte growth factor. It works by signaling the bone marrow to increase the production of neutrophils, which are a specific type of white blood cell essential for the immune system.

By boosting the number of these cells, the medication helps the body maintain its natural ability to fight off infections. It functions similarly to proteins that occur naturally within the human body.

Question 2

What is Zarxio used for?

Accepted Answer

Zarxio is used to treat neutropenia .

Question 3

How does Zarxio work?

Accepted Answer

Mechanism of Action

Zarxio is a man-made version of a natural protein produced in the body called granulocyte colony-stimulating factor (G-CSF). It belongs to a class of medications known as colony-stimulating factors.

Increasing White Blood Cells

The primary function of Zarxio is to act on the bone marrow to increase the production and release of neutrophils, a specific type of white blood cell. These cells are essential for the immune system to identify and destroy harmful bacteria and fungi.

Protecting the Immune System

Certain medical conditions or treatments, such as chemotherapy, can lower the number of white blood cells in the body. This condition, called neutropenia, increases the risk of developing serious or life-threatening infections. Zarxio helps manage this risk by:

Encouraging the bone marrow to create new neutrophils more quickly.

Helping the body maintain a sufficient level of white blood cells during treatment.

Shortening the duration of time a patient spends with a dangerously low white blood cell count.

Question 4

What are the active ingredients in Zarxio?

Accepted Answer

The active ingredient in Zarxio is filgrastim .

Question 5

What are the side effects of Zarxio?

Accepted Answer

Common side effects of Zarxio may include:

Bone pain

Fatigue

Headache

Always consult with a healthcare professional about potential side effects.

Question 6

What drug class is Zarxio?

Accepted Answer

Zarxio belongs to the colony stimulating factor drug class.

Question 7

What is the dosage of Zarxio and how do I take it?

Accepted Answer

Administration Methods

Zarxio is administered as an injection. It can be given in two ways:

Subcutaneous injection: Injected into the fatty tissue just beneath the skin.

Intravenous infusion: Delivered directly into a vein through a needle or catheter.

A healthcare professional may administer the medication, or you may be trained to perform subcutaneous injections at home.

How to Use

Zarxio is typically used once daily. To ensure the medication works effectively, it should be used at the same time each day. If you are self-administering the medication, follow these guidelines:

Remove the syringe from the refrigerator and let it reach room temperature before use.

Do not shake the syringe, as this can damage the medication.

Inspect the liquid before injecting. It should be clear and colorless. Do not use it if it is cloudy, discolored, or contains particles.

Use each prefilled syringe only once and dispose of it in a puncture-resistant container.

Missed Dose

If you miss a dose, contact your healthcare provider right away to determine when you should take your next dose. Do not take extra medicine to make up for a missed dose.

Question 8

Is Zarxio safe during pregnancy and breastfeeding?

Accepted Answer

Pregnancy

There are no adequate and well-controlled studies regarding the use of Zarxio in pregnant women. Research in animals has shown that filgrastim products may cause adverse effects on the fetus when administered at very high doses, but these results do not always predict how the drug will affect human pregnancies. Because of the lack of human data, healthcare providers typically only prescribe Zarxio during pregnancy if the medical necessity justifies the potential risks.

Breastfeeding

It is not known whether Zarxio is excreted in human breast milk. Because many medications are passed through breast milk and could potentially affect a nursing infant, caution is recommended. Individuals who are breastfeeding or planning to breastfeed should consult with their healthcare provider to weigh the benefits of the medication against the potential risks to the infant.

Question 9

What forms and strengths does Zarxio come in?

Accepted Answer

Zarxio is supplied as a sterile, preservative-free solution for injection. It is available in the following form:

Prefilled Syringe: A delivery system that includes a needle guard to help prevent injury after administration.

The medication is administered either as an injection under the skin or as an infusion into a vein.

Question 10

What is the FDA approval status of Zarxio?

Accepted Answer

FDA Approval History

Zarxio was approved by the U.S. Food and Drug Administration (FDA) in March 2015. It was the first biosimilar product to receive FDA approval in the United States. A biosimilar is a biological product that is highly similar to a reference product already approved by the FDA, which in this case is Neupogen (filgrastim).

Approved Indications

The FDA has approved Zarxio for several indications related to low white blood cell counts (neutropenia):

Reducing the incidence of infection in patients with non-myeloid malignancies receiving myelosuppressive anti-cancer drugs.

Reducing the duration of neutropenia in patients with acute myeloid leukemia receiving induction or consolidation chemotherapy.

Reducing the duration of neutropenia and related clinical issues in patients undergoing bone marrow transplantation.

Mobilizing autologous hematopoietic stem cells into the peripheral blood for collection.

Reducing the incidence and duration of symptoms in patients with symptomatic severe chronic neutropenia.

Regulatory Oversight

Zarxio is a prescription-only medication. While it does not carry a Boxed Warning or require a Risk Evaluation and Mitigation Strategy (REMS) program, it is regulated to ensure it meets the same high standards of quality and efficacy as the reference biological product.

Question 11

What should I know about Zarxio and cost?

Accepted Answer

Insurance and Out-of-Pocket Costs

The price of Zarxio can vary significantly based on your health insurance plan. Most insurance providers, including Medicare and Medicaid, provide coverage for this medication, though you may still be responsible for copayments or coinsurance. Because Zarxio is a biosimilar, it is typically less expensive than the reference product, Neupogen.

Financial Support Programs

Financial assistance may be available for patients who meet certain eligibility requirements. These options often include:

Manufacturer Patient Assistance: Programs designed to help patients with limited insurance coverage or high out-of-pocket costs.

Co-pay Cards: Savings cards that can reduce the cost for patients with commercial insurance.

Patients should consult with their healthcare provider or pharmacist to determine the most accurate cost based on their specific treatment plan and insurance status. Because Zarxio is often administered in a clinical setting, costs may also include fees for the healthcare professional's time and the supplies used for the injection.

Zarxio

Medication Quick Facts

📋Overview

What It's Used For

How It Works

Side Effects

Warnings & Precautions

Dosage & How to Take

Pregnancy & Breastfeeding

Forms & Strengths

FDA / Regulatory Status

Price Information

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