Head-to-head evidence
albuterol HFA (Proventil HFA) vs albuterol sulfate (Amphastar)
Same mechanism, same race: design-graded trial evidence for both assets, with the grading rationale shown. Grades describe the quality of the evidence, never the merits of either security.
Asthma
Shared mechanism: Beta-2 adrenergic receptor · full Asthma pipeline
albuterol HFA (Proventil HFA)
Marketed by Amphastar Pharmaceuticals, Inc.
NCT00635505 · Phase 3 · terminated
In this trial, Proventil-HFA is the established reference product that the investigational Armstrong's albuterol-HFA is being compared against, rather than the agent under primary evaluation itself, and no results have been posted yet.
albuterol sulfate (Amphastar)
Developed by Amphastar Pharmaceuticals, Inc.
NCT01581177 · Phase 2 · completed
The study randomized 23 participants and used triple blinding with placebo and active albuterol comparators, but its small sample and unreported results limit the strength of the evidence. The primary outcome was change in FEV1 AUC, a physiological surrogate measure, and the registry does not state whether this comparison was successful.
Next expected readout: April 2028 · NCT07426458 (registry estimate)
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: albuterol HFA (Proventil HFA)'s landscape · albuterol sulfate (Amphastar)'s landscape