Xanthin Syrup – Asthma, Bronchitis & Breathing Difficulty ReliefXanthin Syrup Xanthin Syrup is a bronchodilator medicine that helps relieve asthma, chronic bronchitis, and breathing problems caused by airway obstruction. It contains Theophylline, which works by relaxing the muscles in the airways and improving airflow, allowing patients to breathe more easily. This syrup provides effective relief from cough, wheezing, and chest tightness, helping restore normal breathing patterns. It is also useful for managing