Ventolin is the brand name for the drug albuterol, which is used to treat respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD). There are several synonyms for Ventolin, including ProAir, Proventil, and AccuNeb, which are all brand names for albuterol medications. Another synonym for Ventolin is salbutamol, which is the international non-proprietary name (INN) for albuterol. Both albuterol and salbutamol work by relaxing the muscles in the airways, allowing for easier breathing. While there are different brand names and synonyms for Ventolin, they all contain the same active ingredient and are used to treat similar respiratory conditions.