The effect of a holding chamber on albuterol metered-dose inhaler product differences.

CONCLUSION: Ventolin, Proventil, and ProAir should not be considered interchangeable products. In this study, the dose of albuterol sulfate likely to reach the lungs with Proventil or ProAir is 2 to 3 times that of Ventolin. As such, patients with asthma may require 3 additional puffs of Ventolin to achieve a clinical benefit similar to Proventil or ProAir. Because all 3 products contain 200 actuations, it also follows that Proventil or ProAir products may last a user 2 to 3 times longer than Ventolin. PMID: 27613457 [PubMed - in process]
Source: Annals of Allergy, Asthma and Immunology - Category: Allergy & Immunology Authors: Tags: Ann Allergy Asthma Immunol Source Type: research