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What are the most serious side effects of Tezspire injections?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hi doctor,

My husband, who is 41 years old, has suffered from severe asthma his entire life. He currently uses Breo Ellipta, Spiriva, and Singulair, yet still requires daily albuterol nebulizer treatments. Despite all these medications, he has been hospitalized four times this year due to asthma attacks that do not respond to his rescue inhalers.

He works in construction but has had to reduce his working hours because dust, fumes, and temperature changes trigger his asthma attacks. His pulmonologist recently recommended trying Tezspire injections, as previous biologic treatments (including Dupixent and Fasenra) did not provide significant relief.

His most recent pulmonary function tests show an FEV1 of 54 % predicted, and he requires supplemental oxygen at night.

According to his allergist, he has both allergic and non-allergic triggers, which is why Tezspire may be more effective than the previous biologics he has tried.

My questions are as follows:

  1. How long does it typically take to determine whether Tezspire is effective?

  2. If it works, will he be able to reduce or discontinue some of his current medications?

  3. Most importantly, are there any serious side effects we should be aware of?

He is missing a great deal of work due to asthma attacks, and we are facing a financial crisis as a result. We truly need an effective treatment.

Please help me.

Thanks.

Answered by Dr. Fizza Noor

Education:

MCPS

Professional Bio:

Dr. Fizza Noor is a compassionate pediatric specialist with a focused interest in pediatric surgery and the management of childhood allergies, including asthma. She is known for combining clinical precision with a warm, child-friendly approach that helps both children and parents feel comfortable and supported. Her areas of interest include child health, neuro-oncology, and preventive care, enabling her to provide comprehensive and well-rounded pediatric services.

This doctor is not available for online consultations on the platform anymore.

Hi,

Welcome to icliniq.com.

I can understand your concern.

It sounds like your husband has been facing significant challenges with his asthma, and your concerns regarding the financial burden and the search for an effective treatment are completely understandable. Tezspire (Tezepelumab) is a relatively new biologic therapy that targets a specific pathway involved in asthma inflammation. It has shown promising results in reducing asthma exacerbations, particularly in patients with severe asthma who have not responded well to other treatments.

What to expect from Tezspire:

How long before Tezspire becomes effective? It typically takes a few weeks to begin noticing improvement, although the full effect may not be apparent until up to 12 weeks. Many patients experience a reduction in the frequency of asthma attacks and improvements in symptoms such as shortness of breath within this timeframe.

Can he reduce other medications if Tezspire works? If Tezspire proves effective for your husband, there may be an opportunity to reduce the dosage or frequency of his current medications. However, this should only be done under the supervision of his pulmonologist. Discontinuing medications prematurely may lead to poor asthma control and an increased risk of exacerbations.

Are there any serious side effects? Tezspire is generally well-tolerated. Common side effects include injection site reactions, headaches, and upper respiratory tract infections. Rarely, it may cause serious allergic reactions or increase the risk of certain infections. It is important to monitor for any unusual symptoms and report them to the healthcare provider promptly.

Probable contributing factors:

  1. Environmental and occupational triggers, such as dust, fumes, and temperature fluctuations.

  2. Inadequate control with current medications (Breo Ellipta, Spiriva, Singulair, Albuterol).

  3. A combination of allergic and non-allergic asthma mechanisms

Recommended investigations:

  1. Regular monitoring of FEV1 and overall asthma control using spirometry.

  2. Review of inhaler technique and treatment adherence.

  3. Allergy testing to better identify and manage specific triggers.

Suggested treatment plan:

  1. Initiate Tezspire therapy as prescribed, with close monitoring of response (initial assessments every four weeks).

  2. Continue existing medications (such as Albuterol, Spiriva, etc.) until the effectiveness of Tezspire is fully evaluated.

  3. Regular follow-up with a pulmonologist to review progress and adjust the treatment plan accordingly.

Follow-up guidelines:

  1. Schedule a follow-up visit within four to eight weeks to assess the response to Tezspire.

  2. Consider gradual tapering of other medications based on asthma control, under physician supervision.

  3. Reinforce proper inhaler technique to optimize medication delivery and effectiveness.

Preventive measures:

  1. Increased wheezing, shortness of breath, or chest tightness despite treatment.

  2. Signs of respiratory infection (fever, cough, increased mucus production).

  3. Any signs of a severe allergic reaction (rash, facial swelling, difficulty breathing).

If you need any more clarification or help with your questions, feel free to ask.

Thank you.

The Probable causes

Environmental and occupational triggers (dust, fumes, temperature changes) Inadequate control with current medications (Breo Ellipta, Spiriva, Singulair, Albuterol) Combination of allergic and non-allergic asthma components

Investigations to be done

Regular monitoring of FEV1 and asthma control (spirometry tests) Review of inhaler technique and compliance Possible allergy testing to identify triggers more effectively

Treatment plan

Start Tezspire as prescribed and monitor closely for response (every 4 weeks initially) Continue other medications (albuterol, spiriva, etc.) until Tezspire is assessed for effectiveness. Regular follow-up visits with pulmonologist to adjust treatment plan as needed.

Preventive measures

Increased wheezing, breathlessness, or chest tightness despite treatment Signs of respiratory infections (fever, cough, increased mucus production) Severe allergic reactions (rash, swelling, difficulty breathing)

Regarding follow up

Follow up in 4-8 weeks to evaluate response to Tezspire. Gradually reduce other medications based on asthma control under doctor guidance. Ensure that inhaler technique is optimized to maximize medication effectiveness
Answered by Dr. Fizza Noor
Medically reviewed by iCliniq medical review team
Published At June 30, 2025
Reviewed At July 4, 2025

Education:

MCPS

Professional Bio:

Dr. Fizza Noor is a compassionate pediatric specialist with a focused interest in pediatric surgery and the management of childhood allergies, including asthma. She is known for combining clinical precision with a warm, child-friendly approach that helps both children and parents feel comfortable and supported. Her areas of interest include child health, neuro-oncology, and preventive care, enabling her to provide comprehensive and well-rounded pediatric services.

This doctor is not available for online consultations on the platform anymore.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Dr. Fizza Noor
Dr. Fizza Noor

Pediatric Allergy/Asthma Specialist

Education:

MCPS

Professional Bio:

Dr. Fizza Noor is a compassionate pediatric specialist with a focused interest in pediatric surgery and the management of childhood allergies, including asthma. She is known for combining clinical precision with a warm, child-friendly approach that helps both children and parents feel comfortable and supported. Her areas of interest include child health, neuro-oncology, and preventive care, enabling her to provide comprehensive and well-rounded pediatric services.

This doctor is not available for online consultations on the platform anymore.

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