A Trial to Assess the Bioequivalence of Generic Tiotropium Bromide Inhalation Powder and Reference Product in Healthy Adult Participants Under Fasting Conditions (Pilot)

It's a generic product of Spiriva HandiHaler.

Tiotropium Bromide Inhalation Powder RLD, which binds to M3 receptors, and blocks the action of acetylcholine to relieve spasm of bronchial smooth muscle.