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Last reviewed 2026-06-10 · How we verify

Succitimal — Competitive Intelligence Brief

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

Succitimal (PHENSUXIMIDE) competitive landscape: 2 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: phensuximide. Area: Neuroscience.

marketed phensuximide Voltage-gated T-type calcium channel Neuroscience Small molecule Live · refreshed every 30 min

Target snapshot

Succitimal (PHENSUXIMIDE).

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	Approval / PDUFA
Succitimal TARGET	PHENSUXIMIDE		marketed	phensuximide	Voltage-gated T-type calcium channel	1982-01-01
Celontin	METHSUXIMIDE	Pfizer	marketed	Anti-epileptic Agent	Voltage-gated T-type calcium channel	1957-01-01
Paradione	PARAMETHADIONE		marketed	paramethadione	Voltage-gated T-type calcium channel	1949-01-01

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 (phensuximide class)

· 1 drug in this class

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Cite this brief

Drug Landscape (2026). Succitimal — Competitive Intelligence Brief. https://druglandscape.com/ci/phensuximide. Accessed 2026-06-10.

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