Drugs / Phenytoin
last change Sep 2026 re-read 9 days ago

Phenytoin

targets CYP3A4

Developed for
epilepsy · depressive disorder · optic neuritis · post-traumatic epilepsy · asthma · chronic idiopathic neuropathy · cognitive impairment with or without cerebellar ataxia · Ewing sarcoma
+13 more · impulse control disorder · osteonecrosis of the jaw · post-traumatic stress disorder · skin atrophy · striae distensae, familial · substance-related disorder · traumatic brain injury · anal fistula · epilepsy syndrome · epilepsy with generalized tonic-clonic seizures · gingival recession · subarachnoid hemorrhage · ulcer of anus and rectum
Investigated by
Hadassah Medical Organization · BeiGene · Merck Sharp & Dohme LLC · Radboud University Medical Center · The Rogosin Institute · University of Texas Southwestern Medical Center
+83 more · Academic Medical Center - University of Amsterdam · Al-Azhar University · Arcus Biosciences, Inc. · Assiut University · BeOne Medicines · Beersheva Mental Health Center · Bial - Portela C S.A. · Bristol-Myers Squibb · Cambridge University Hospitals NHS Foundation Trust · Canisius-Wilhelmina Hospital · Centers for Disease Control and Prevention · Centre of Chinese Medicine, Georgia · Children's Surgical Center, Cambodia · David J. Kopsky · Dr Cipto Mangunkusumo General Hospital · Dr. C.J. Vaillant Fonds · Dr. Mark Kunik · Dr. Melinda Stanley · Dr. Stacey Holmes · Dr. Su Bailey · Dr. Thomas A. Kent · Epygenix · Gannex Pharma Co., Ltd. · Germans Trias i Pujol Hospital · Gia Dinh People Hospital · Hannover Medical School · Harborview Injury Prevention and Research Center · Harmony Biosciences Management, Inc. · Hospital Clinic of Barcelona · Hospital Juan Canalejo · Hospital Mutua de Terrassa · Hospital Universitari de Bellvitge · Hospital Universitario La Paz · Hospital Universitario Ramon y Cajal · Hospital Universitario Virgen Macarena · Hospital Vall d'Hebron · Hospitales Universitarios Virgen del Rocío · Janssen Infectious Diseases BVBA · Jim McAuley · Johnson & Johnson Pharmaceutical Research & Development, L.L.C. · M. Carmen Cabellos Minguez · Maasstad Hospital · Maastricht University Medical Center · Mansoura University · Medisch Spectrum Twente · Michael E. DeBakey VA Medical Center · Ministry of Health, Italy · Ministry of Health, Uganda · Multiple Sclerosis Society of Great Britain and Northern Ireland · Mylan Pharmaceuticals Inc · National Institute of Neurological Disorders and Stroke (NINDS) · National Institute on Drug Abuse (NIDA) · National Multiple Sclerosis Society · Novartis Pharmaceuticals · Ortho-McNeil Neurologics, Inc. · Penn State University · Pfizer · Princess Beatrix Muscle Foundation · Quotient Sciences · Rambam Health Care Campus · Rea Rehabilitation Centre, Georgia · Rijnstate Hospital · Sant Pau Research Institute · Sarcoma Oncology Research Center, LLC · Shahid Beheshti University of Medical Sciences · Shiraz University of Medical Sciences · Spectrum Pharmaceuticals, Inc · St. Antonius Hospital · Takeda · Tehran University of Medical Sciences · Tyme, Inc · United States - Israel Binational Science Foundation · University College, London · University Magna Graecia · all 89 on the full record

Regulatory milestones approvals, filings & regulatory actions · 1 recorded

MilestoneJurisdictionBrandIndicationDateSentence it was read from
Approved US (FDA) DILANTIN-125 — 1953-01-06 fda.gov ↗

Trials 51

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 118 trials
Phase 1 NCT07783503 Sep → Nov 2026 expected — Novartis Pharmaceuticals Recruiting No outcome recorded
Phase 1 NCT07590102 Jun → Oct 2026 expected — BeOne Medicines Recruiting No outcome recorded
Phase 1 NCT07066722 Jul → Dec 2025 HIV infectious disease ViiV Healthcare Completed No outcome recorded
Phase 1 NCT06919991 May → Oct 2025 — Arcus Biosciences, Inc. Completed No outcome recorded
Phase 1 NCT06906809 Apr → Oct 2025 — BeiGene Completed No outcome recorded
Phase 1 NCT06903715 Mar → May 2025 — Merck Sharp & Dohme LLC Completed No outcome recorded
Phase 1 NCT07824193 Jan → Apr 2025 — Epygenix Completed No outcome recorded
Phase 1 NCT06543043 Aug → Oct 2024 — BeiGene Completed No outcome recorded
Phase 1 NCT06466473 Jul → Oct 2024 — Pfizer Completed No outcome recorded
Phase 1 NCT06719557 May → Jul 2024 — Merck Sharp & Dohme LLC Completed No outcome recorded
Phase 26 trials · 1 met primary
Phase 2 NCT03778996 Jan 2020 → Dec 2027 expected Ewing sarcoma Sarcoma Oncology Research Center, LLC Active not recruiting No outcome recorded
Phase 2 NCT02939937 Mar 2017 → Nov 2018 optic neuritis Tehran University of Medical Sciences Completed No outcome recorded
Phase 2 NCT01730313 Feb 2016 → Jul 2017 — Centers for Disease Control and Prevention Withdrawn No outcome recorded
Phase 2 NCT02413658 Mar 2015 → Apr 2016 — Children's Surgical Center, Cambodia Unknown No outcome recorded
Phase 2 NCT01451593 Nov 2011 → Dec 2014 multiple sclerosis, optic neuritis University College, London Completed Met primary
Phase 2 NCT01187719 May 2010 → Jun 2012 HIV infectious disease, infectious embryofetopathy, pregnancy disorder Radboud University Medical Center Completed No outcome recorded
Phase 2/31 trial
Phase 2/3 NCT04647877 Sep 2020 → Jun 2023 chronic idiopathic neuropathy David J. Kopsky Completed No outcome recorded
Phase 36 trials · 2 met primary · 1 missed
Phase 3 NCT04573803 Mar 2021 → Mar 2026 overdue post-traumatic epilepsy, traumatic brain injury Cambridge University Hospitals NHS Foundation Trust Not yet recruiting No outcome recorded
Phase 3 NCT03650270 Mar 2015 → Mar 2018 epilepsy University of Cape Town Completed Met primary
Phase 3 NCT02374567 Jan 2015 → Jun 2017 anxiety disorder, dementia, depressive disorder, schizophrenia +1 Hannover Medical School Terminated No outcome recorded
Phase 3 NCT00591006 Jan 2008 → Jul 2009 — University of Texas Southwestern Medical Center Completed Met primary
Phase 3 NCT00210782 Jun 2004 → Aug 2007 epilepsy Johnson & Johnson Pharmaceutical Research & Development, L.L.C. Completed Missed primary
Phase 3 NCT00004817 Feb 1991 → ? brain injury, post-traumatic epilepsy National Institute of Neurological Disorders and Stroke (NINDS) Completed No outcome recorded
Phase 411 trials · 2 met primary · 1 missed
Phase 4 NCT06942468 Jul 2025 → Jul 2026 overdue skin atrophy Assiut University Not yet recruiting No outcome recorded
Phase 4 NCT05697614 Mar → May 2023 epilepsy Dr Cipto Mangunkusumo General Hospital Unknown No outcome recorded
Phase 4 NCT03161509 Jul 2017 → Dec 2018 — Rambam Health Care Campus Terminated No outcome recorded
Phase 4 NCT04967326 Jan 2016 → Dec 2018 epilepsy Gia Dinh People Hospital Completed Met primary
Phase 4 NCT02595723 Jul 2015 → Nov 2016 cognitive impairment with or without cerebellar ataxia University of Texas Southwestern Medical Center Completed Met primary
Phase 4 NCT01478035 Nov 2011 → Mar 2015 epilepsy, pneumococcal meningitis M. Carmen Cabellos Minguez Terminated No outcome recorded Stop: Enrollment
Phase 4 NCT00366067 Aug 2006 → Feb 2007 asthma Centre of Chinese Medicine, Georgia Completed No outcome recorded
Phase 4 NCT00610532 Mar 2006 → Jun 2011 epilepsy Jim McAuley Terminated No outcome recorded
Phase 4 NCT00581893 Aug 2005 → Dec 2008 — University of Iowa Completed Missed primary
Phase 4 NCT00146237 Nov 2003 → Jan 2005 depressive disorder Beersheva Mental Health Center Completed No outcome recorded
Phase not applicable9 trials · 1 missed
— NCT07841366 Dec 2025 → May 2026 striae distensae, familial Al-Azhar University Completed No outcome recorded
— NCT07801157 Jul 2024 → Dec 2025 — Mansoura University Completed No outcome recorded
— NCT05236166 Apr 2017 → May 2021 epilepsy University Magna Graecia Completed No outcome recorded
— NCT02056236 Apr 2014 → Apr 2021 cardiac arrest University of Twente Completed Missed primary
— NCT03269214 Sep 2012 → Oct 2016 osteonecrosis of the jaw Shiraz University of Medical Sciences Completed No outcome recorded
— NCT00333931 Jun 2006 → ? impulse control disorder, post-traumatic stress disorder Michael E. DeBakey VA Medical Center Unknown No outcome recorded
— NCT00162474 Sep 2003 → Dec 2030 expected — Hadassah Medical Organization Recruiting No outcome recorded
— NCT00226538 Aug 1999 → ? — Hadassah Medical Organization Completed No outcome recorded
— NCT00162461 Aug 1998 → Dec 2020 — Hadassah Medical Organization Unknown No outcome recorded
Comparator or background therapy32 trials
Phase 0 NCT00598923 Comparator Nov 2004 → Feb 2009 epilepsy, traumatic brain injury University of Pennsylvania Terminated No outcome recorded Stop: Enrollment
Phase 1 NCT06379958 Comparator Apr → Sep 2024 overdue — Modern Biosciences Ltd Recruiting No outcome recorded
Phase 1 NCT06633185 Comparator Jan → Aug 2022 ulcer of anus and rectum Mansoura University Completed No outcome recorded
Phase 1 NCT02707965 Comparator Jun 2017 → Aug 2018 epilepsy Food and Drug Administration (FDA) Completed No outcome recorded
Phase 1 NCT01680042 Comparator Oct 2012 → Mar 2013 — Shahid Beheshti University of Medical Sciences Unknown No outcome recorded

News releases announcing trial results or a regulatory action · 2

DateIssuerRelease
2021-07-17 ViiV Healthcare Results ViiV Healthcare to present new data from diverse portfolio and pipeline of 2-drug and long-acting regimens for HIV treatment and prevention at IAS 2021 viivhealthcare.com ↗
After three years of therapy, dolutegravir/lamivudine maintained non-inferior virologic efficacy compared with a TBR, with no confirmed virologic withdrawals or resistance development noted in the dolutegravir/lamivudine treatment arm.
2019-10-01 Lupin Limited Regulatory Lupin receives U.S. FDA approval for Extended Phenytoin Sodium Capsules USP lupin.com ↗

Evidence & citations 10 cited values

Every value below carries the sentence it was read from. 84 sources stand behind the page.

FieldValueCited text
Known as Phenytoin “Drugs from ACT groups N03A, N05BA, N05CD, H02A or S01EC will be used including prednisolon,levetiracetam, valproate, carbamazepine, oxcarbazepine, topiramate, felbamate,...” NCT00552526 ↗
79

“Patients will receive the recommended phase 2 dose (RP2D) of SM-88 (460 mg by mouth [PO] twice a day [BID] D1 - 28) as well as three conditioning agents (MPS): methoxsalen (10...” NCT04720664 ↗

“Antiepileptic drugs allowed are therefore: lamotrigine, levetiracetam, lacosamide, sodium valproate, carbamazepine, oxcarbabazepine, slicarbazepine, pregabalin, gabapentin,...” NCT03636958 ↗

“List of allowed antiepileptic drugs were: valporic acid, carbamazepine, clobazam, N-desmethylclobazam, topiramate,TRI477, TRI476, clonazepam, zonisamide, phenobarbital, phenytoin” NCT01713946 ↗

“Racemetyrosine (SM-88) is an amino-acid analogue used with methoxsalen, phenytoin, and sirolimus (MPS) to enhance SM-88 activity.” PMID 32924093 ↗ Sep 2020

“Drugs: carbamazepine, lamotrigine, levetiracetam, oxcarbazepine, phenobarbital, phenytoin, topiramate, valproic acid, zonisamide” NCT05236166 ↗

“Step 1: Phenytoin (loading dose 15-20 mg/kg iv, maintenance doses 150 mg iv twice per day)” NCT02056236 ↗

“a single parenteral infusion of phenytoin followed by an infusion of parenteral midazolam” NCT03650270 ↗

“Phenytoin/Dilantin” NCT00734864 ↗

“Phenytoin” NCT02205931 ↗

NCT00219479 ↗

Show 69 more sources

Known as Dilantin “a single dose of phenytoin (Dilantin® is a brand name anticonvulsant which has phenytoin as its active ingredient)” NCT00610532 ↗
4

“Phenytoin (Dilantin) levels during change in enteral feeding” NCT00219479 ↗

“Phenytoin/Dilantin” NCT00734864 ↗

NCT00510783 ↗

NCT00040469 ↗

Known as Dilantin Infatabs “Dilantin Infatabs (Phenytoin)” NCT01355068 ↗
Known as Epanutin Infatabs “Epanutin Infatabs (Phenytoin)” NCT01355068 ↗
Known as Heal Quick “group I (treatment group) will be treated with lateral internal sphincterotomy with topical application of phenytoin 2% (Heal Quick®, Al hadidi pharm, Egypt)” NCT06633185 ↗
Known as Phenytoin Sodium ClinicalTrials.gov intervention name — accepted as the source's own label NCT04573803 ↗
Known as PHT “Phenytoin (PHT), used as an anti-seizure medication, has an established side effect of causing drug-influenced gingival enlargement.” NCT07590375 ↗
2

“Phenytoin is a anti-seizure medication. Participants will receive phenytoin (PHT) at 5 mg/kg/day in 2 divided doses.” NCT00774306 ↗

“To evaluate topiramate (TPM) and phenytoin (PHT) monotherapy following rapid oral initiation in new-onset epilepsy.” PMID 20633037 ↗ Oct 2010

Action Activate “Phenytoin (inducer), which can increase the production of the enzyme” NCT07590102 ↗
Route Oral “received an oral loading dose (20mg/kg)” NCT00000285 ↗
Target CYP3A4 “phenytoin, a strong cytochrome P450 (CYP)3A4 inducer” NCT07783503 ↗