Head-to-head evidence
albuterol sulfate (Amphastar) vs fluticasone furoate/vilanterol
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 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)
fluticasone furoate/vilanterol
Marketed by GlaxoSmithKline
NCT01086384 · Phase 3 · completed
This was a randomized, triple-blind, active-controlled trial with approximately 2,019 treated participants. Its primary hard clinical endpoint—having one or more severe asthma exacerbations—favored fluticasone furoate/vilanterol and was statistically significant.
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: albuterol sulfate (Amphastar)'s landscape · fluticasone furoate/vilanterol's landscape