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Spiriva, Spiriva Respimat
Bronchodilator • Long-acting muscarinic antagonist (LAMA)
Blocks muscarinic M3 receptors in bronchial smooth muscle, causing bronchodilation
Drug Class
Bronchodilator
Subclass
Long-acting muscarinic antagonist (LAMA)
Half-life
25 hours
Time for plasma concentration to decrease by 50%
Protein Binding
72%
Fraction bound to plasma proteins
Therapeutic Index
Wide
Margin between therapeutic and toxic doses