Head-to-head evidence
Oxcarbazepine (Oxtellar XR) vs Rufinamide
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: Voltage-gated sodium channel · full Epilepsy pipeline
Oxcarbazepine (Oxtellar XR)
Marketed by Supernus Pharmaceuticals
NCT00772603 · Phase 3 · completed
The trial was randomized, quadruple-blind, placebo-controlled, and included 366 participants, with seizure frequency as a clinical primary endpoint. The 2,400-mg comparison significantly favored oxcarbazepine, while the 1,200-mg comparison did not, so the primary result was mixed rather than consistently positive.
Rufinamide
Marketed by Eisai and partners
NCT00334958 · Phase 3 · completed
This was a randomized, double-blind, placebo-controlled trial with 356 participants, and its primary clinical endpoint was change in partial-seizure frequency. The reported median change favored rufinamide (-23.25% versus -9.80% with placebo), but the registry does not state whether this 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: Oxcarbazepine (Oxtellar XR)'s landscape · Rufinamide's landscape