Tiotropium

Tiotropium bromide, sold under the brand name Spiriva among others, is a long-acting bronchodilator used in the management of chronic obstructive pulmonary disease (COPD) and asthma.[10][11] Specifically it is used during periods of breathing difficulty to prevent them from getting worse, rather than to prevent them from happening.[10] It is used by inhalation through the mouth.[10] Onset typically begins within half an hour and ... [wikipedia]