Related Experiment Video
Updated: May 23, 2026

Methodology for Sputum Induction and Laboratory Processing
Published on: December 17, 2017
Investigation of salbutamol tolerance
1Department of Therapeutics and Pharmacology, The Queen's University, Belfast.
Regular use of salbutamol inhalers or tablets does not diminish their effectiveness in patients with reversible airways disease. Studies show consistent bronchodilator response, indicating no significant decrease in efficacy over time.
Area of Science:
- Pulmonology
- Pharmacology
Background:
- Reversible airways disease, such as asthma, requires effective bronchodilator therapy.
- Salbutamol is a common short-acting beta-agonist used for relief of bronchospasm.
Purpose of the Study:
- To investigate whether regular salbutamol treatment leads to a decreased response in patients with reversible airways disease.
- To assess the impact of chronic salbutamol administration on bronchodilator responsiveness.
Main Methods:
- A double-blind, cross-over study involving two groups of patients with reversible airways disease.
- Group 1 received salbutamol (200 μg) or placebo via aerosol for two weeks.
- Group 2 received salbutamol (4 mg) or placebo tablets for four weeks, with both taken four times daily.
Main Results:
- Measurement of forced expiratory volume in 1 second (FEV1) 10 minutes post-inhalation showed no significant difference after prior salbutamol treatment.
- Statistical comparison of bronchodilator response after aerosol and oral salbutamol administration indicated no diminished effect.
Conclusions:
- Regular treatment with salbutamol, whether by aerosol or oral tablet, does not result in a decreased response.
- Patients with reversible airways disease can expect consistent bronchodilator efficacy with regular salbutamol use.
Related Concept Videos
Antiasthma Drugs: β2-Adrenoceptor Agonists
One class of bronchodilators includes β2-adrenoceptor agonists. These agents target the β2-adrenoceptors located on bronchial smooth muscle cells. By stimulating these receptors, β2-agonists induce relaxation in these...
Dose-Response Relationship: Selectivity and Specificity
Bioavailability Study Design: Healthy Subjects Versus Patients
Sputum Studies II: Culture and Sensitivity
Sputum culture and sensitivity is a medical procedure used to diagnose bacterial infections in the respiratory tract and select the most appropriate antibiotics for treatment. This process involves analyzing sputum samples of thick and opaque secretions produced in the lungs and airways. These samples are collected from patients and then sent to the laboratory for analysis.
The test can identify various pathogens responsible for respiratory infections, including Streptococcus,...
Bioavailability Study Design: Single Versus Multiple Dose Studies
Therapeutic Drug Monitoring: Drug Analysis Methods

