Bronchodilator Effect of Oral Doxofylline and Procaterol in Chronic Obstructive Pulmonary Disease : A Randomized Crossover Study
The goal of this clinical trial is to determine if doxofylline and procaterol are effective in treating patients with stable chronic obstructive pulmonary disease (COPD). It will also assess the safety of both drugs. The main questions it aims to answer are: Does doxofylline demonstrate a comparable bronchodilator effect to procaterol in COPD participants? What medical problems do participants experience when taking doxofylline and procaterol?"