<unk> (inhalation) is an anticholinergic agent that is FDA approved for the treatment of bronchospasm associated with chronic obstructive pulmonary disease, including chronic bronchitis and emphysema.   Common adverse reactions include headache, dizziness, nervousness, back pain, chest pain, mouth dryness, nausea, coughing, dyspnea, bronchitis and upper respiratory tract infections.
Ipratropium 
Xamoterol
Levosalbutamol
Tulobuterol
Zafirlukast
Mizolastine
Pirbuterol
Seratrodast