What causes tolerance to asthma inhalers?

Question

Hello doctor,

I need some guidance on my wife's asthma. She is 45 years old and has been using Salbutamol and Terbutaline inhalers, but they no longer seem effective. She is still wheezing at night and experiencing chest tightness. Could she have developed a tolerance to these inhalers? Are there stronger medications or alternative treatments we should consider? Should we get lung function tests to assess her condition? I am worried that it could worsen and want to know the next steps. Any advice would be greatly appreciated.

Thank you.

Answer 1

Hi,

Welcome to icliniq.com.

I read your query and can understand your concern.

It sounds like your wife's asthma (a chronic respiratory condition that causes inflammation and narrowing of the airways, leading to breathing difficulties) is not well-controlled, and there could be several reasons for this. Over-reliance on short-acting bronchodilators (such as Salbutamol and Terbutaline) may indicate worsening airway inflammation that requires stronger treatment.

Possible reasons for worsening asthma:

Increased airway inflammation – She may need an inhaled corticosteroid (ICS), such as Budesonide or Fluticasone, to reduce airway inflammation and prevent worsening symptoms.
Bronchial hyperresponsiveness (a key feature of asthma, referring to an exaggerated response of the airways to various stimuli, leading to airway narrowing and difficulty breathing) – If her asthma is becoming more severe, a long-acting beta-agonist (LABA), such as Formoterol or Salmeterol, combined with an inhaled corticosteroid (ICS), may provide better symptom control.
Reduced response to reliever inhalers – While true tolerance to short-acting bronchodilators is rare, frequent use (more than three times per week) suggests poor asthma control and the need for anti-inflammatory treatment with corticosteroids.
Triggers or allergies – Identifying and avoiding potential asthma triggers is important. Has there been any recent exposure to allergens (such as dust, pollen, or pet dander), environmental changes, respiratory infections, or increased stress?
A different underlying condition – Some conditions can mimic worsening asthma, such as chronic obstructive pulmonary disease (COPD) (progressive lung disease), gastroesophageal reflux disease (GERD) (a digestive disorder where stomach acid flows back into the esophagus, irritating the airway and triggering asthma), sinusitis (inflammation of the sinuses that can lead to postnasal drip, congestion, and chronic cough), or vocal cord dysfunction (a condition where the vocal cords close instead of opening during breathing, leading to wheezing, shortness of breath, and throat tightness).

Next steps

Lung function tests – A spirometry test (which measures lung function before and after using a bronchodilator) or peak expiratory flow monitoring can help assess how well her lungs are functioning.
Consider maintenance therapy – A combination inhaler containing an inhaled corticosteroid (ICS) and a long-acting beta-agonist (LABA), such as Budesonide, Formoterol, or Fluticasone/Salmeterol, may provide better long-term control.
Add a leukotriene receptor antagonist (LTRA) – A medication such as Montelukast may help with nighttime symptoms and reduce asthma symptoms triggered by allergies.
Check for other contributing conditions – Conditions such as gastroesophageal reflux disease (GERD), chronic sinusitis, or respiratory infections can worsen asthma symptoms. Identifying and treating these conditions may help improve overall asthma control.

Kindly consult the doctor and take medicines accordingly.

If her symptoms persist or worsen, consult a doctor or a pulmonologist for a comprehensive asthma management plan.

I hope this helps.

Kindly revert so I can assist you further.

Thank you.