Pulmonary Drug Table Asthma β-Agonists Name Mechanism of Action Key Indication(s) Key Toxicity Albuterol β2-agonist Acute asthma COPD Tachycardia Hypokalemia Salmeterol Long-acting β2-agonist Nonacute asthma COPD Dizziness Headaches Tachycardia Terbutaline Long-acting β2-agonist Tocolytic Nonacute asthma Tachycardia Headache Leukotriene Inhibitors Name Mechanism of Action Key Indication(s) Key Toxicity Zileuton 5-LOX inhibitor Chronic asthma Elevated liver enzymes Sleep disturbance Zafirlukast Leukotriene receptor antagonist Chronic asthma Eosinophilia Headache Nausea Montelukast Leukotriene receptor antagonist Chronic asthma GI disturbance Headache Hypersensitivity reaction Insomnia Methylxanthines Name Mechanism of Action Key Indication(s) Key Toxicity Theophylline PDE inhibitor Adenosine antagonist Asthma COPD Cardiotoxic Neurotoxic (seizures) Steroids (Inhaled) Name Mechanism of Action Key Indication(s) Key Toxicity Budesonide Anti-inflammatory Metabolized 1st pass by the liver (budesonide) Asthma COPD Allergic rhinitis Inflammatory bowel disease Upper airway irritation Ulceration Infection Triamcinolone Beclomethazone Anti-inflammatory Metabolized 1st pass by the liver (budesonide) Asthma Sore throat Nosebleeds Upper airway infection Cough Headaches Others Name Mechanism of Action Key Indication(s) Key Toxicity Cromolyn Mast cell stabilizer Chronic asthma Allergies Dry nose/throat Nosebleeds Nedocromil Mast cell stabilizer Chronic asthma Allergies Allergic reaction Dry nose/throat Nosebleeds Ipratropium/tiotropium Anti-cholinergic COPD Asthma Dry mouth Sedation