Fostair contains which characteristic that makes it more potent than traditional inhalers?

• A. It contains extra-fine particles of beclomethasone
• B. It contains salmeterol as the active bronchodilator
• C. It uses a higher dose of albuterol
• D. It is a single-ingredient inhaler containing beclomethasone only

Answer: (A)

The key idea is that particle size in inhalers affects how widely the drug reaches inside the lungs. Extra-fine particles of beclomethasone mean the corticosteroid can deposit deeper into the smaller airways, where inflammation often drives asthma and COPD symptoms. This deeper, more extensive lung deposition lets a lower dose achieve a stronger anti-inflammatory effect, making the inhaled therapy appear more potent than traditional inhalers with larger particles.

Fostair is a combination inhaler that includes formoterol as the bronchodilator, not salmeterol. It is not a single-ingredient beclomethasone inhaler, and it isn’t defined by a higher dose of albuterol.