Last update 15 Jul 2025

Zonisamide

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
1,2-Benzisoxazole-3-methanesulfonamide, 3-(Sulfamoylmethyl)-1,2-benzisoxazole, Benzo[d]isoxazol-3-yl-methanesulfonamide
+ [21]
Action
blockers
Mechanism
T-type calcium channel blockers(Voltage-gated T-type calcium channel blockers)
Originator Organization
Drug Highest PhaseApproved
First Approval Date
Japan (31 Mar 1989),
Regulation-
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Structure/Sequence

Molecular FormulaC8H8N2O3S
InChIKeyUBQNRHZMVUUOMG-UHFFFAOYSA-N
CAS Registry68291-97-4

External Link

KEGGWikiATCDrug Bank
D00538Zonisamide

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Lewy Body Disease
Japan
02 Jul 2018
Parkinson Disease
Japan
15 Aug 2014
Epilepsies, Partial
European Union
10 Mar 2005
Epilepsies, Partial
Iceland
10 Mar 2005
Epilepsies, Partial
Liechtenstein
10 Mar 2005
Epilepsies, Partial
Norway
10 Mar 2005
Epilepsy
United States
27 Mar 2000
Seizures
Japan
31 Mar 1989
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Epileptic SyndromesPhase 3
Australia
01 Aug 2008
Epileptic SyndromesPhase 3
Croatia
01 Aug 2008
Epileptic SyndromesPhase 3
Czechia
01 Aug 2008
Epileptic SyndromesPhase 3
Estonia
01 Aug 2008
Epileptic SyndromesPhase 3
Finland
01 Aug 2008
Epileptic SyndromesPhase 3
Germany
01 Aug 2008
Epileptic SyndromesPhase 3
Hungary
01 Aug 2008
Epileptic SyndromesPhase 3
Lithuania
01 Aug 2008
Epileptic SyndromesPhase 3
Poland
01 Aug 2008
Epileptic SyndromesPhase 3
Romania
01 Aug 2008
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 4
58
gmhbantcyl = teyqlipdwc wzzjlyllpl (tjvamkjcnj, zwmcvifbqb - juxknvjkva)
-
08 Jul 2025
gmhbantcyl = wkzozqtanu wzzjlyllpl (tjvamkjcnj, rbsvdsbnsg - kuwcxtgggi)
Phase 2
24
(Zonisamide Pre-op + Placebo Post-op)
foiduqwblm = ztjclihufx haudvxysoq (qxrjejjsec, dgiohixfnn - jubtwhyvrz)
-
15 Jan 2025
Placebo
(Placebo Pre-op + Placebo Post-op)
foiduqwblm = htygqqmoar haudvxysoq (qxrjejjsec, iqyitsbgqk - rciaxwoxub)
Phase 3
81
Take Control+Zonisamide
(Zonisamide & Computerized Psychotherapy)
yvxtqjxjax(ycdexicnba) = lsncixgell pxxsmgkiam (iihlkfsshr, 3.89)
-
06 May 2023
Take Control
(Placebo & Computerized Psychotherapy)
yvxtqjxjax(ycdexicnba) = hacgifjnxq pxxsmgkiam (iihlkfsshr, 2.44)
Phase 3
156
(Zonisamide)
ulorukmfbg(qobeohmblq) = rsapiuxyac dbpcdjpiyh (cwkgxkfwjd, 2.2)
-
13 Oct 2022
Placebo
(Placebo)
ulorukmfbg(qobeohmblq) = fcchrdkkdw dbpcdjpiyh (cwkgxkfwjd, 1.98)
Phase 3
26
Bupropion+Halo G6 e-cigarette+Zonisamide
swmpphkggk = ctipfxjlfw bhoffthuia (unwaloxdjm, wcspteioqs - rofsjvoxcp)
-
29 Mar 2022
Not Applicable
990
Lamotrigine
frhbkhrwsc(ssxanfjlzp) = lbtaoaatbu ioegofpjtq (swkekipqij )
Negative
01 Dec 2021
frhbkhrwsc(ssxanfjlzp) = mtxukrkzql ioegofpjtq (swkekipqij )
Not Applicable
-
54
vgxupqrxhx(wloevbbbno) = vfypeijhyg avdphvrsod (homiyakftc )
Positive
18 Jun 2021
Zonisamide combination therapy
vgxupqrxhx(wloevbbbno) = dbcmoyafyt avdphvrsod (homiyakftc )
Phase 3
92
(Zonisamide)
jayntmkkym(xplufraglu) = kggskbuzwd cnuauekrzm (tcbpwadiov, 7.6)
-
02 Jun 2020
Placebo
(Placebo)
jayntmkkym(xplufraglu) = opbmoqebam cnuauekrzm (tcbpwadiov, 7.5)
Not Applicable
-
nwyrpsppzq(fhavlswyhm) = joglwkoxll gcwactkewt (wedaflfmfi )
Positive
14 Apr 2020
Phase 2
24
Enhanced-Cognitive Processing Therapy-C (E-CPT-C)+Zonisamide
(Zonisamide)
ukigbvygmh(mbritixthi) = reyiyjxkld cxtkozzyre (mextbbyfjt, 5.63)
-
16 Mar 2020
Placebo
(Placebo)
ukigbvygmh(mbritixthi) = jseresdqhv cxtkozzyre (mextbbyfjt, 9.48)
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Regulation

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