Head-to-head evidence
Clobazam (Onfi) vs Diazepam (Valtoco)
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.
Epilepsy
Shared mechanism: GABA-A receptor · full Epilepsy pipeline
Clobazam (Onfi)
Marketed by Lundbeck LLC and partners
NCT00518713 · Phase 3 · completed
The study randomly assigned 238 participants to low-, medium-, or high-dose clobazam or placebo, with participants, care providers, and investigators masked to treatment. Its clinical primary endpoint—percent reduction in drop seizures—was statistically better than placebo for all three doses, supporting a strong evidence grade.
Diazepam (Valtoco)
Marketed by Neurelis, Inc.
NCT02721069 · Phase 3 · completed
The study was open-label, nonrandomized, and had no placebo or active comparator, so it provides uncontrolled safety and treatment-exposure information rather than comparative evidence of effectiveness. Its primary endpoint was the number of participants receiving NRL-1 over 12 months, not a hard clinical seizure outcome, and no formal primary-endpoint comparison was applicable.
Next expected readout: December 2026 · NCT06346262 (registry estimate)
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: Clobazam (Onfi)'s landscape · Diazepam (Valtoco)'s landscape