Exciting news! 🎉 Qwark’s AI pharmacy assistant (in beta) is now live and ready to answer any medication-related questions you may have!Try it out now!
  1. Drugs
  2. Zarxio
Zarxio Image


Free shipping
No membership fee
Qwark price promise
Qwark is committed to lowering your prescription prices. We will always recommend the best price we can find. If you find a lower price on an identical, in-stock product, tell us and we'll match it.

For more strengths and prices, please contact Qwark support

Need help?

Our patient support team is available Monday through Friday 8AM - 6PM PST, and Saturday 9AM - 12PM PST.

What Is Zarxio?

Zarxio is a medication that belongs to a class of drugs called colony-stimulating factors. The active ingredient in Zarxio is filgrastim. It is used to stimulate the production of white blood cells in the body, specifically granulocytes, which play a crucial role in fighting off infections. White blood cells are an essential part of the immune system and help to defend the body against bacteria, viruses, and other harmful substances. In certain medical conditions such as cancer, bone marrow transplant, or chemotherapy, the body's ability to produce enough white blood cells may be compromised. Zarxio is prescribed in such situations to boost the production of these crucial cells and help reduce the risk of infection. Zarxio is administered through injection and is typically given by a healthcare professional. It is important to follow the prescribed dosage and schedule as directed by your doctor. Common side effects of Zarxio may include bone pain, muscle aches, fatigue, and fever, among others. As with any medication, it is important to discuss with your healthcare provider about any existing medical conditions, medications you may already be taking, and potential risks and benefits of using Zarxio.

How to use Zarxio?

Zarxio (filgrastim) is an injectable medication prescribed to help stimulate the production of white blood cells in the body. White blood cells play a vital role in fighting off infections and maintaining a healthy immune system. To use Zarxio, it is crucial to follow the instructions provided by your healthcare provider. The medication is typically given as an injection under the skin or into a vein. It can be self-administered at home or administered by a healthcare professional, depending on your specific condition and treatment plan. Before administering Zarxio, it's important to ensure that you have been properly trained on how to prepare and administer the injection. Use sterile equipment and follow aseptic technique to prevent the introduction of bacteria into the injection site. The dosage and frequency of Zarxio injections will be determined by your doctor based on your individual needs. It is important to adhere to the prescribed schedule and not miss any doses. If you have any questions or concerns about the administration of Zarxio, do not hesitate to consult your healthcare provider for guidance and clarification.

Zarxio (filgrastim) is a medication that stimulates the production of white blood cells in the body. It is typically prescribed to patients who have a weakened immune system and are at a higher risk of developing infections due to certain medical conditions or undergoing certain treatments, such as chemotherapy. When using Zarxio, there are several warnings that should be considered: 1. Allergic reactions: Some individuals may be allergic to filgrastim. Signs of an allergic reaction may include difficulty breathing, hives, swelling of the face or throat, and rash. If any of these symptoms occur, immediate medical attention should be sought. 2. Splenic rupture: In rare cases, Zarxio may cause the spleen to rupture. Patients should seek medical help if they experience sudden left-sided abdominal pain or shoulder pain, as these may be signs of a splenic rupture. 3. Acute respiratory distress syndrome (ARDS): ARDS is a serious condition that affects the lungs. Although extremely rare, it has been reported in patients receiving filgrastim. If symptoms of ARDS, such as difficulty breathing, rapid breathing, or low oxygen levels, occur, medical attention should be sought immediately. 4. Capillary leak syndrome (CLS): CLS is a condition characterized by the leaking of fluid from blood vessels into surrounding tissues. Although extremely rare, filgrastim use has been associated with CLS. Symptoms may include swelling, dizziness, difficulty breathing, or an increase in blood thickness. If any of these symptoms are experienced, prompt medical attention is necessary. It is important to note that this is not an exhaustive list of warnings associated with Zarxio. Patients should always consult with their healthcare provider and carefully follow their instructions and guidance during treatment with this medication.

Before taking Zarxio (filgrastim), it is important to be aware of a few warnings associated with this prescription drug. First and foremost, it is essential to inform your healthcare provider about any allergies you may have, especially if you are allergic to filgrastim or any other component of the medication. Additionally, it is important to disclose your medical history, especially if you have a history of sickle cell disease, myelodysplastic syndrome, or any blood disorders. This information will help your healthcare provider determine if Zarxio is suitable for you and if any precautions need to be taken. Zarxio can have some side effects, such as bone pain, headache, mild rash, or redness at the injection site. However, if you experience any severe side effects, such as difficulty breathing, irregular heartbeat, or signs of an infection, it is crucial to seek immediate medical attention. It is essential to follow the instructions provided by your healthcare provider and use Zarxio exactly as prescribed. Avoid altering the dosage or frequency of administration without consulting your doctor. As with any medication, there can be drug interactions. Inform your healthcare provider about all the medications, supplements, and herbal products you are currently taking to avoid potential interactions that may affect the efficacy or safety of Zarxio. Lastly, Zarxio is primarily used to help the body produce white blood cells and fight infections. It is not meant for cosmetic purposes or to enhance athletic performance. Always consult with your healthcare provider or pharmacist for personalized advice and further information regarding the use of Zarxio.

The common side effects of Zarxio (filgrastim) include bone pain, fever, headache, tiredness, injection site reactions (such as redness, swelling, and pain), and muscle and joint pain. These side effects are usually mild and temporary. Serious side effects of Zarxio are rare but can occur. These may include allergic reactions, such as difficulty breathing, hives, or swelling of the face, lips, tongue, or throat. It is important to seek immediate medical attention if any of these symptoms occur. As with any medication, there may be other side effects not mentioned here. It is essential to consult with a healthcare provider or pharmacist for a comprehensive list of potential side effects and to discuss any concerns or questions you may have.

The active ingredient in Zarxio is filgrastim. Filgrastim is a man-made version of a substance called granulocyte colony-stimulating factor (G-CSF), which is naturally produced by the body. It works by stimulating the bone marrow to produce more white blood cells, specifically a type called neutrophils. Neutrophils play a crucial role in the immune system by fighting off infections. In addition to filgrastim, Zarxio also contains other inactive ingredients that help maintain the stability and effectiveness of the medication. These inactive ingredients may include substances like sodium chloride and acetic acid. It's important to note that Zarxio is a prescription medication and should only be used under the guidance and supervision of a healthcare professional. It is typically prescribed to patients who are undergoing chemotherapy or certain cancer treatments that can suppress the production of white blood cells, putting them at a higher risk of infections.

Zarxio (filgrastim) is typically supplied as a pre-filled syringe or a vial and needs to be stored properly to maintain its effectiveness. Here are the general storage guidelines for Zarxio: 1. Refrigeration: Zarxio should be stored in the refrigerator between 36°F (2°C) and 46°F (8°C). Do not freeze the medication. 2. Protection from light: Keep Zarxio in its original packaging to protect it from light exposure. Do not remove the syringe or vial from its wrapper until you are ready to use it. 3. Avoid shaking: Gently handle the medication and avoid shaking it vigorously, as this can affect its potency. It's important to follow the specific storage instructions provided by the manufacturer or your healthcare provider. Always check the expiration date before using Zarxio and discard any medication that has expired. If you have any doubts or concerns about proper storage, consult your healthcare provider or pharmacist for guidance.