The global expectorant drugs market encompasses the segment of the pharmaceutical industry dedicated to medications that facilitate the expulsion of mucus from the respiratory tract. These drugs are primarily utilized to alleviate symptoms associated with respiratory conditions such as bronchitis, asthma, and chronic obstructive pulmonary disease (COPD) by promoting mucus clearance and easing cough and congestion. Expectorants enhance bronchial secretions or reduce mucus viscosity, making it easier for patients to cough up phlegm. A common active ingredient in these medications is guaifenesin, known for its effectiveness in thinning mucus.