| metaproterenol sulfate |
[USP] a β2-adrenergic receptor agonist with significant β1-adrenergic activity, having bronchodilator and cardiac stimulant actions; used as a bronchodilator in the treatment of asthma-associated bronchospasm and the treatment and prophylaxis of reversible bronchospasm associated with chronic obstructive airway disease, administered orally and by inhalation.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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