Head-to-head evidence
Aclidinium bromide vs Tiotropium bromide
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.
Chronic Obstructive Pulmonary Disease
Shared mechanism: Muscarinic acetylcholine receptor (M3) · full Chronic Obstructive Pulmonary Disease pipeline
Aclidinium bromide · Tudorza Pressair
Marketed by Covis Pharma
NCT00363896 · Phase 3 · completed
The trial randomized 843 participants to double-blind aclidinium or placebo and used trough FEV1, an accepted clinical lung-function endpoint for COPD, as its primary outcome at 12 and 28 weeks. Aclidinium showed higher reported mean FEV1 values at both time points, but because statistical significance for the primary comparisons is not reported, the result is considered unclear rather than definitively met.
Tiotropium bromide
Marketed by Boehringer Ingelheim
NCT02172287 · Phase 3 · completed
This is a large, randomized, double-blind trial with both an active comparator and a placebo arm, using trough FEV1 lung function, the regulator-accepted physiological measure for COPD, as one of its primary endpoints. Registry results were not posted at the time of grading; the key result shown was recovered from the cited external source.
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: Aclidinium bromide's landscape · Tiotropium bromide's landscape