Medical Definition of tiotropium
: an anticholinergic drug administered by oral inhalation in the form of its bromide C19H22NO4S2Br·H2O as a bronchodilator in the treatment of chronic obstructive pulmonary disease Tiotropium is a once-daily, inhaled anticholinergic drug that provides at least 24-hour improvements in airflow and hyperinflation in patients with COPD.—Donald P. Tashkin et al., The New England Journal of Medicine, 9 Oct. 2008 ◆Tiotropium is marketed under the trademark Spiriva.
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