Reliability of a Top Mount Actuation Indicator With Levalbuterol MDI in Adult and Pediatric Subjects With Asthma or COPD

Inclusion Criteria: * Subject must have a documented diagnosis of asthma or COPD for a minimum of 6 months. * Subject must have stable baseline asthma or COPD and have been using a beta-adrenergic agonist, and/or anti-asthma anti-inflammatory medication, and/or over-the-counter asthma medication for at least 6 months. * Subject must be in good health with the exception of their reversible airways disease and not suffering from any chronic condition that might affect their respiratory function. Exclusion Criteria: * Female subject who is pregnant or lactating. * Subject who has a history of hospitalization for asthma or COPD within 45 days. * Subject with currently diagnosed life-threatening asthma or COPD, defined as a history of asthma or COPD episodes requiring intubation, associated with hypercapnia, respiratory arrest, or hypoxic seizures within 3 months prior. * Subject with supplemental oxygen use * Subject with a history of cancer * Subject with hyperthyroidism, diabetes, hypertension, cardiac diseases, or seizure disorders that currently are not well controlled by medication. * Subject with asthma with a greater than 10-pack per year history of cigarette smoking or use of any tobacco products within 6 months.