Isoethanine Adrenergic Agonist, Direct beta2-selective Bronchodilator Metaproterenol Adrenergic Agonist, Direct beta2-selective Bronchodilator Pirbuterol Adrenergic Agonist, Direct beta2-selective Bronchodilator Ritodrine Adrenergic Agonist, Direct beta2-selective Used to relax the uterus during...