Used primarily in pharmaceutical formulations, this compound combines with other active ingredients to enhance therapeutic effects, especially in respiratory medications. It acts as a bronchodilator adjuvant, helping to improve airflow in conditions like asthma and chronic obstructive pulmonary disease (COPD). Its ability to modulate adenosine receptors contributes to reducing airway inflammation and constriction. Commonly found in combination products with antihistamines or decongestants, it is utilized to relieve symptoms of allergic conditions and upper respiratory tract congestion. Due to its stimulant properties, it may also support alertness and counteract drowsiness in certain multi-ingredient preparations.