Who are zonisamide high dose group's main competitors?

Direct comparators (same drug class / molecular target / therapeutic area): Standard dose zonisamide, Placebo zonisamide.

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Every 30 minutes from primary sources (FDA, EMA, MHRA, PMDA, ClinicalTrials.gov, USPTO). Subscribe to the RSS feed below for push alerts.

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Last reviewed 2026-06-10 · How we verify

zonisamide high dose group — Competitive Intelligence Brief

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

zonisamide high dose group (zonisamide high dose group) competitive landscape: 2 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: Sulfonamide anticonvulsant. Area: Neurology.

marketed Sulfonamide anticonvulsant Voltage-gated sodium channels, T-type calcium channels, GABA enhancement Neurology Small molecule Live · refreshed every 30 min

Target snapshot

zonisamide high dose group (zonisamide high dose group) — Eisai Korea Inc.. Zonisamide is a sulfonamide anticonvulsant that reduces neuronal excitability by blocking sodium and calcium channels and enhancing GABAergic inhibition.

Comparator set (2 drugs)

Auto-detected by same drug class / molecular target / therapeutic area, ranked by phase + recency. Override with ?vs=slug1,slug2,….

Drug	Generic	Sponsor	Phase	Class	Target
zonisamide high dose group TARGET	zonisamide high dose group	Eisai Korea Inc.	marketed	Sulfonamide anticonvulsant	Voltage-gated sodium channels, T-type calcium channels, GABA enhancement
Standard dose zonisamide	Standard dose zonisamide	Mario Negri Institute for Pharmacological Research	marketed	Sulfonamide anticonvulsant	Voltage-gated sodium channels, T-type calcium channels, GABA signaling
Placebo zonisamide	Placebo zonisamide	Rose Research Center, LLC	phase 3	Sulfonamide anticonvulsant	Voltage-sensitive sodium channels

Recent regulatory actions (last 90 days)

No regulatory actions in the last 90 days for this set.

Upcoming PDUFA dates (next 180 days)

No PDUFA dates in the next 180 days for this set.

Patent timeline (forward window)

No upcoming patent expiries for this set.

Sponsor landscape (Sulfonamide anticonvulsant class)

Eisai Korea Inc. · 1 drug in this class
Mario Negri Institute for Pharmacological Research · 1 drug in this class
Rose Research Center, LLC · 1 drug in this class

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Cite this brief

Drug Landscape (2026). zonisamide high dose group — Competitive Intelligence Brief. https://druglandscape.com/ci/zonisamide-high-dose-group. Accessed 2026-06-10.

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Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing