Spiriva is a brand name for a medication called tiotropium bromide. It is a long/acting bronchodilator used for the maintenance treatment of chronic obstructive pulmonary disease (COPD) and asthma. COPD is a progressive lung disease that includes conditions like chronic bronchitis and emphysema, and it can cause breathing difficulties and reduced lung function.Tiotropium belongs to a class of drugs known as anticholinergics or muscarinic antagonists. These medications work by relaxing the smooth muscles around the airways in the lungs, which helps to open up the airways and improve airflow. This bronchodilator effect makes it easier for individuals with COPD to breathe and can help alleviate symptoms such as shortness of breath and wheezing.