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Xolair® (Omalizumab) Injection | Asthma & Allergy Therapy
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What is Xolair®?
Xolair® is a prescription biologic medication used as an add-on treatment for moderate-to-severe allergic asthma that is not well controlled with inhaled medications. It contains omalizumab, which targets a key part of the body’s allergic response. It’s designed for ongoing asthma management—not for sudden breathing problems.
- Used in adults and children 6 years and older
- Prescribed for allergic asthma linked to specific triggers
- Belongs to a class called anti-IgE biologics
- Helps reduce allergic inflammation involved in asthma
- Given as an injection under the skin
How do I take Xolair®?
Xolair® is given as a subcutaneous injection (under the skin), usually every 2 or 4 weeks. The exact dose and schedule are based on your body weight and certain lab values. Treatment is typically started in a healthcare setting due to safety monitoring.
- Injected under the skin at regular intervals
- Dose is individualized based on medical factors
- May be given in a clinic, especially at the beginning
- Some patients may transition to home use after evaluation
- Not used for sudden asthma symptoms
Always follow your provider’s instructions and continue your other asthma medications unless told otherwise.
What are the possible side effects?
Xolair® can cause side effects, ranging from general discomfort to more serious reactions. While many people tolerate treatment, it’s important to know what to watch for.
- Joint pain, fatigue, or dizziness
- Skin reactions such as itching or rash
- Ear pain or upper respiratory symptoms
- Headache or mild illness-like symptoms
- Injection-related discomfort
Seek urgent medical help if you experience signs of a serious allergic reaction, such as swelling, difficulty breathing, or severe rash. Contact your provider if you notice unusual or persistent symptoms after treatment.
For more detail refer to the Important Safety / Prescribing Information.
*Prescription products require an online consultation with a licensed healthcare provider who will determine if treatment is appropriate. Omalizumab is the active ingredient in Xolair®. Xolair® is a registered trademark of its respective owner and is mentioned for reference only. Individual results may vary.
PRODUCT Prices
Xolair® prices
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Xolair® (Omalizumab) 75mg
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Xolair® (Omalizumab) 150mg
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If appropriate, a doctor will issue a prescription. Treatment decisions are always made by the provider.
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Your medication is shipped from a licensed partner pharmacy and typically arrives in 1–2 business days.
Similar Treatments
*Prescription products require an online consultation with a licensed healthcare provider who will determine if treatment is appropriate. Images are for Illustration purposes only. Actual product and packaging may differ.
Topics
Who is Xolair® approved for in asthma?
Xolair® is used for people with moderate-to-severe allergic asthma that is not well controlled with standard inhaled treatments. It’s specifically for patients who show sensitivity to certain year-round allergens and continue to have symptoms despite regular therapy.
- Approved for adults and children 6 years and older
- Used when inhaled medications alone are not enough
- Requires evidence of allergic asthma (testing may be needed)
- Not intended for mild or well-controlled asthma
- Prescribed as part of a long-term treatment plan
Your provider will evaluate your symptoms and test results before recommending this treatment.
Is Xolair® a rescue medication for asthma attacks?
Xolair® is not designed to treat sudden asthma attacks or breathing emergencies. It works over time as part of a long-term control strategy.
- Not for immediate symptom relief
- Does not replace rescue inhalers
- Works gradually with regular use
- Must be combined with other asthma treatments
- Emergency symptoms require fast-acting medication
Always follow your asthma action plan and keep your rescue medication available.
How does Xolair® help with allergic asthma?
Xolair® targets a part of the immune system involved in allergic reactions. By reducing this activity, it helps lower the impact of allergens that can trigger asthma symptoms.
- Focuses on allergic inflammation pathways
- Helps reduce sensitivity to triggers
- Supports long-term asthma control
- Works differently from inhalers
- Requires consistent use over time
This approach is especially helpful for people whose asthma is driven by allergies.
How is Xolair® usually given?
Xolair® is given as an injection under the skin on a regular schedule. The exact dose and timing depend on your body weight and certain lab values.
- Administered every 2 or 4 weeks
- Injected under the skin
- Dose is individualized
- May involve one or more injections per visit
- Provided in specific formats such as vials or prefilled options
Your provider will determine the appropriate dosing schedule for you.
Who can receive or give Xolair® injections?
Xolair® treatment is usually started in a healthcare setting to monitor for potential reactions. Some patients may later be approved for at-home use after evaluation.
- Initial doses often given in a clinic
- Monitoring may be required after injections
- Some patients may transition to home use
- Proper training is necessary
- Not all patients are candidates for self-injection
Your provider will decide what setting is safest for your treatment.
What should patients know about Xolair®’s anaphylaxis warning?
Xolair® carries a serious warning for allergic reactions, including anaphylaxis. These reactions can happen after any dose, even if previous doses were tolerated.
- Symptoms may include swelling, rash, or difficulty breathing
- Can occur shortly after injection or later
- Monitoring may be required after each dose
- Immediate medical care is needed if symptoms appear
- Providers are trained to manage these reactions
Always seek urgent care if you experience signs of a severe allergic reaction.
What symptoms need urgent medical attention?
Certain symptoms require immediate medical attention while using Xolair®. These may indicate a serious reaction or complication.
- Swelling of the face, lips, or throat
- Difficulty breathing
- Severe rash or hives
- Fever with joint pain
- Sudden worsening of symptoms
Seek emergency care if any of these occur. Refer to the Important Safety Information for more details.
Can Xolair® replace inhaled or oral steroid medicines?
Xolair® is not meant to immediately replace steroid medications. Any changes to your current treatment should be carefully managed by your provider.
- Do not stop steroids on your own
- Reductions should be gradual
- Sudden changes may worsen symptoms
- Xolair® is part of a broader treatment plan
Always follow your provider’s instructions when adjusting medications.
What should patients discuss with a provider before starting Xolair®?
Before starting Xolair®, your provider will review your health history and current treatments to ensure safe use.
- Previous allergic reactions
- History of severe allergies or anaphylaxis
- Current medications or supplements
- Pregnancy or breastfeeding
- Any ongoing health conditions
Sharing complete information helps your provider determine if this treatment is appropriate.
FAQ
How should Xolair® be stored and handled?
Xolair® should be stored and handled according to the instructions provided with your medication. Proper storage helps maintain its effectiveness.
- Follow storage instructions on the package
- Keep medication in a safe place
- Avoid using damaged or expired product
- Ask your pharmacist if unsure
- Keep out of reach of children
If you have questions about storage, your provider or pharmacist can help.
Is Xolair® used alone or added to my current asthma treatment?
Xolair® is usually added to your existing asthma treatment rather than replacing it. It’s prescribed when inhalers alone are not enough to control symptoms.
- Typically combined with inhaled corticosteroids
- May be used alongside other asthma medications
- Part of a long-term management plan
- Your provider will tailor your treatment
Can Xolair® be used during an asthma attack?
No, Xolair® is not used to treat asthma attacks. It does not act quickly enough to relieve sudden breathing symptoms.
- Not a rescue medication
- Does not provide immediate relief
- Keep your rescue inhaler available
- Follow your asthma action plan
If you have severe or worsening symptoms, seek medical care right away.
What testing may be needed before starting Xolair®?
Before starting Xolair®, your provider may perform tests to confirm that it’s appropriate for your type of asthma.
- Blood test to measure IgE levels
- Assessment of body weight for dosing
- Allergy testing for triggers
- Review of symptom history
These steps help ensure the treatment is matched to your condition.
What should I do if I miss a Xolair® dose?
If you miss a scheduled injection, contact your provider or clinic to reschedule as soon as possible.
- Do not try to double up doses
- Stay consistent with appointments
- Follow provider guidance for timing
- Keep track of your schedule
Your provider will advise you on how to safely continue treatment.
Can I change how often I get Xolair® injections?
No, you should not change your injection schedule without medical advice. The timing is based on specific factors like your weight and lab results.
- Dosing schedule is individualized
- Changes may affect treatment effectiveness
- Your provider will adjust if needed
- Stick to your prescribed plan
Can I stop my inhaled steroid or oral steroid after starting Xolair®?
You should not stop steroid medications on your own. Any changes need to be carefully managed by your provider.
- Steroids may need gradual reduction
- Sudden stopping can worsen symptoms
- Xolair® does not replace them immediately
- Follow provider guidance
Always consult your provider before making changes to your treatment.
Can I use Xolair® if I also have allergies, nasal polyps, or hives?
Xolair® is approved for several allergic and inflammatory conditions, but your treatment plan depends on your specific diagnosis.
- May be used in multiple conditions
- Your provider will assess your full health picture
- Treatment may vary based on symptoms
- Focus remains on asthma management
Discuss your full medical history with your provider for the best approach.
Can I drink alcohol while receiving Xolair®?
There are no specific restrictions listed for alcohol use with Xolair®. However, it’s important to monitor how you feel.
- No direct interaction noted
- Alcohol may affect overall well-being
- Be aware of any unusual symptoms
- Ask your provider if unsure
Can I drive after a Xolair® injection?
Most people can continue normal activities, including driving, after an injection. However, individual reactions can vary.
- Monitor how you feel after treatment
- Avoid driving if you feel unwell
- Watch for dizziness or fatigue
- Safety should come first
If you’re unsure, wait until you feel stable before driving.
Where is Xolair® injected?
Xolair® is injected under the skin in specific areas of the body. A healthcare provider will guide you on proper administration.
- Common areas include the upper arm, thigh, or abdomen
- Injection sites may be rotated
- Given under the skin (subcutaneous)
- Follow provider instructions carefully
If you’re unsure about injection sites, ask your provider for guidance.
Can I give myself Xolair® at home?
Some patients may be able to administer Xolair® at home after proper evaluation and training, but this is not suitable for everyone.
- Initial doses often given in a clinic
- Provider will assess if home use is appropriate
- Training is required before self-injection
- Monitoring may still be needed
Always follow your provider’s guidance for administration.
What does “1 vial” mean?
“1 vial” refers to a single container of medication that may need to be prepared before use. It does not necessarily equal one full treatment dose.
- Dose depends on your prescription
- May require preparation before injection
- Treatment schedule varies by patient
- Follow provider instructions
Your provider will determine how much medication you need per dose.
How should I store Xolair® at home?
Storage instructions can vary depending on the specific form of Xolair® you receive, so always follow the packaging instructions.
- Store according to label directions
- Keep medication in a safe place
- Do not use expired or damaged product
- Ask your pharmacist if unsure
Proper storage helps maintain the medication’s effectiveness.
What should I tell my provider before starting Xolair®?
Before starting Xolair®, share important health information to help ensure safe treatment.
- History of allergic reactions
- Previous severe reactions (like anaphylaxis)
- Current medications or supplements
- Pregnancy or breastfeeding
- Any ongoing health conditions
Providing complete information helps your provider make the safest decision.
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References
Title Lorem ipsum – short description of the study or article. / Source: NCBI
Link: LINK / Published: May 5, 2023
Title Lorem ipsum – short description of the study or article. / Source: NCBI
Link: LINK / Published: May 5, 2023
Title Lorem ipsum – short description of the study or article. / Source: NCBI
Link: LINK / Published: May 5, 2023
Title Lorem ipsum – short description of the study or article. / Source: NCBI
Link: LINK / Published: May 5, 2023
H. Igde - MD
Clinical Expertise: Anesthesiology, Emergency Medicine, Urology, and Oncology
As a medical expert, Igde, MD has carefully reviewed the medical content on this page and confirmed that it is accurate and up to date with current medical knowledge.
For more information about the scope of the reviewed content and the role of our medical advisors, please visit our Medical Board page.
Last Update on 02/29/2026 | Next Information check will be on 08/29/2026
*All information presented on this page is for informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment. Prescription products are available only after an online consultation with a licensed U.S. healthcare provider who determines if treatment is appropriate. Individual results may vary. US Quick Health LLC does not sell or ship medications directly. All prescriptions are fulfilled by licensed U.S. pharmacies.
Xolair® is a registered trademark of Genentech and Novartis and is mentioned for reference and informational purposes only. US Quick Health LLC is not affiliated with, endorsed by, or sponsored by Genentech, Novartis, or any other trademark owners.
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All trademarks and registered brand names are the property of their respective owners. US Quick Health is a telehealth coordination platform and does not operate as a pharmacy. No medications or medical products are directly sold or shipped by US Quick Health. All information provided on usquickhealth.com is for informational purposes only and does not constitute medical advice or a binding offer. Use of this platform is at your own risk and initiative. You are solely responsible for complying with the applicable laws in your jurisdiction. Our services are not intended for emergency medical situations. In case of an emergency, please dial 911.
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Support
About Us
Legal
© 2025 US Quick Health, LLC. All rights reserved.
All trademarks and registered brand names are the property of their respective owners. US Quick Health is a telehealth coordination platform and does not operate as a pharmacy. No medications or medical products are directly sold or shipped by US Quick Health. All information provided on usquickhealth.com is for informational purposes only and does not constitute medical advice or a binding offer. Use of this platform is at your own risk and initiative. You are solely responsible for complying with the applicable laws in your jurisdiction. Our services are not intended for emergency medical situations. In case of an emergency, please dial 911.
Medical consultations are conducted by independent, licensed healthcare professionals. US Quick Health does not employ medical providers and does not interfere with clinical decisions. US Quick Health complies with HIPAA and ensures that all personal health information (PHI) is handled securely and in accordance with U.S. privacy laws. All prescriptions are fulfilled by licensed U.S. pharmacies. Company Name: US Quick Health, LLC | Business Address: STE 27345 W Sand Lake Rd, Suite 210, Office 2630, Orlando, FL 32819 | Support Email: [email protected] | General Inquiries: [email protected] | Phone: +1 (332) 223-0323 | Business Hours: 24/7
