Proventil is a brand name for the medication albuterol, which is used to treat bronchospasm in patients with asthma, chronic obstructive pulmonary disease (COPD), and other respiratory conditions. Some synonyms for Proventil include Ventolin, ProAir, AccuNeb, and Respirol. Ventolin and ProAir are also brand names for albuterol inhalers, while AccuNeb and Respirol are brand names for nebulizer solutions of albuterol. Other synonyms for albuterol include Salbutamol, Levalbuterol, and Terbutaline. These medications work by relaxing the muscles in the airways, making it easier to breathe. Like Proventil, they are available by prescription only and should be used as directed by a healthcare provider.