Head-to-head evidence
fenoterol vs Olodaterol
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
fenoterol
Developed by Boehringer Ingelheim
NCT02177370 · Phase 3 · terminated
This was a randomized, double-blind, active-controlled crossover study, but it enrolled only 19 participants and one of its two primary measures is a laboratory receptor-density biomarker rather than a direct asthma outcome, and no results have been posted.
Olodaterol
Marketed by Boehringer Ingelheim
NCT00467740 · Phase 2 · completed
The study randomized 296 participants to placebo or one of four olodaterol doses, but the registry does not clearly report whether treatment assignment was blinded. Its primary outcome was a lung-function surrogate rather than a hard clinical outcome, and results were mixed across doses: only olodaterol 20 micrograms significantly improved trough FEV1 versus placebo at 4 weeks.
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: fenoterol's landscape · Olodaterol's landscape