Which are among the most common bronchodilators?

• A. Albuterol and Salmeterol
• B. Ipratropium and Theophylline
• C. Montelukast and Zafirlukast
• D. Fluticasone and Budesonide

Answer: (A)

Bronchodilators relieve bronchoconstriction by relaxing airway smooth muscle, so the most commonly used ones are beta-2 adrenergic agonists. Albuterol provides rapid relief as a short-acting agent, while salmeterol offers long-lasting control as a long-acting agent. Together, they represent the pair most frequently encountered in everyday asthma and COPD management. The other options include drugs that are not direct bronchodilators or are used less often for this purpose: ipratropium is an anticholinergic bronchodilator used in some contexts but not as commonly as beta-2 agonists; theophylline is an older methylxanthine with more side effects and narrow therapeutic window; montelukast and zafirlukast block leukotriene-mediated inflammation rather than providing immediate bronchodilation; fluticasone and budesonide are inhaled corticosteroids that reduce inflammation rather than dilate airways.