Head-to-head evidence
foslevodopa/foscarbidopa vs Inbrija (CVT-301)
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.
Parkinson's Disease
Shared mechanism: dopamine precursor · full Parkinson's Disease pipeline
foslevodopa/foscarbidopa · Vyalev
Marketed by AbbVie
NCT04380142 · Phase 3 · completed
The trial randomized 145 participants to active treatment or an active comparator, with participants, clinicians, investigators, and outcome assessors quadruple-blinded. The primary clinical endpoint was met: least-squares mean improvement in “On” time was 2.72 hours with ABBV-951 versus 0.97 hours with oral carbidopa/levodopa, a difference of 1.75 hours (95% CI 0.46–3.05; p=0.0083).
Inbrija (CVT-301)
Marketed by Merz Therapeutics
NCT02240030 · Phase 3 · completed
This was a randomized, quadruple-blind, placebo-controlled trial with 351 participants and a clinical primary endpoint based on the UPDRS Part III motor score. Although the primary score numerically favored high-dose CVT-301 over placebo, the registry does not state whether that primary comparison was statistically significant, so the result remains unclear.
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: foslevodopa/foscarbidopa's landscape · Inbrija (CVT-301)'s landscape