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Showing 1–15 of 15 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Gabapentin Enacarbil (GEn) Clear all
Completed Phase 2 Interventional Results available

A Study In Patients With Neuropathic Pain From Post-Herpetic Neuralgia (PHN)

NCT00619476
View directory record Official record
Conditions
Neuralgia, Postherpetic
Interventions
GEn 1200mg/day, GEn 2400mg/day, GEn 3600mg/day, Placebo
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years and older
Enrollment
376 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
72
States / cities
Birmingham, Alabama • Northport, Alabama • Chandler, Arizona + 65 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2013 · Synced Sep 25, 2026, 4:58 PM EDT
Completed Phase 2 Interventional Results available

A Clinical Study in Subjects With Neuropathic Pain From PHN Who Have Had an Inadequate Response to Gabapentin Treatment

NCT00617461
View directory record Official record
Conditions
Neuralgia, Postherpetic
Interventions
GEn 1200mg/day, GEn 3600mg/day
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
42
States / cities
Phoenix, Arizona • Oxnard, California • Roseville, California + 36 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2013 · Synced Sep 25, 2026, 4:58 PM EDT
Completed Phase 2 Interventional Results available

PECS Block vs. Multimodal Analgesia for Prevention of Persistent Postoperative Pain in Breast Surgery

NCT03084536
View directory record Official record
Conditions
Breast Cancer, Breast Cancer Female, Cancer of Breast
Interventions
Bupivacaine, Gabapentin, Celecoxib, Acetaminophen, Midazolam, Fentanyl
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 23, 2024 · Synced Sep 25, 2026, 4:58 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Effect of Gabapentin on Cardiac Repolarization in Healthy Volunteers

NCT01516372
View directory record Official record
Conditions
Restless Legs Syndrome
Interventions
GEn 1200mg, Gen 6000 mg, GEn Placebo, Moxifloxacin Placebo, Moxifloxacin
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 11, 2021 · Synced Sep 25, 2026, 4:58 PM EDT
Completed Phase 4 Interventional Results available

Early Diuresis Following Colorectal Surgery

NCT02351934
View directory record Official record
Conditions
Colorectal Disorders
Interventions
Furosemide, Celecoxib, Gabapentin
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 6, 2018 · Synced Sep 25, 2026, 4:58 PM EDT
Recruiting Phase 4 Interventional

Nighttime Agitation and Restless Legs Syndrome in People With Alzheimer's Disease

NCT03082755
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Gabapentin Enacarbil, Placebo Oral Tablet
Drug
Lead sponsor
University of Texas at Austin
Other
Eligibility
55 Years and older
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated May 17, 2022 · Synced Sep 25, 2026, 4:58 PM EDT
Completed Phase 2 Interventional Results available

A Study In Patients With Neuropathic Pain From Diabetic Peripheral Neuropathy (DPN)

NCT00643760
View directory record Official record
Conditions
Neuropathy, Diabetic
Interventions
Placebo, GEn 1200mg/day, GEn 2400mg/day, GEn 3600mg/day, Pregabalin
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years and older
Enrollment
421 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
90
States / cities
Alabaster, Alabama • Birmingham, Alabama • Dothan, Alabama + 81 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2013 · Synced Sep 25, 2026, 4:58 PM EDT
Withdrawn Early Phase 1 Interventional

Efficacy of Gabapentin in Prevention of Tourniquet Pain and Hypertension

NCT01441531
View directory record Official record
Conditions
Tourniquet-induced Pain, Tourniquet-induced Hypertension
Interventions
gabapentin 600 mg po, Placebo pill given one hour before surgery
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 64 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 16, 2015 · Synced Sep 25, 2026, 4:58 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Drug Interaction Study With Gabapentin Enacarbil and Morphine

NCT01476124
View directory record Official record
Conditions
Restless Legs Syndrome
Interventions
morphine Placebo, GEn 600 mg, Morphine, GEn Placebo
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years to 65 Years · Male only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 15, 2013 · Synced Sep 25, 2026, 4:58 PM EDT
Completed Phase 2 Interventional Results available

Dose-Response and Pharmacokinetics of Gabapentin Enacarbil (GEn [XP13512 / GSK1838262]) in Restless Legs Syndrome

NCT01332305
View directory record Official record
Conditions
Restless Legs Syndrome
Interventions
GEn (XP13512/GSK1838262), Placebo
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years and older
Enrollment
217 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 21, 2013 · Synced Sep 25, 2026, 4:58 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Optimization of Pre-operative Oral Analgesics in Patients Undergoing Ambulatory Minimally Invasive Hysterectomy

NCT03420794
View directory record Official record
Conditions
Hysterectomy, Laparoscopy, Analgesia
Interventions
Timing of pre-operative oral non-narcotic analgesics in relation to minimally invasive hysterectomy
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Weston, Florida
Source: ClinicalTrials.gov public record
Updated Mar 7, 2023 · Synced Sep 25, 2026, 4:58 PM EDT
Not listed Phase 4 Interventional

Effects of Gabapentin Enacarbil on Arousals, Heart Rate, Blood Pressure and PLMs in Restless Legs Syndrome

NCT02424695
View directory record Official record
Conditions
Restless Legs Syndrome
Interventions
Gabapentin Enacarbil (GEn), Placebo
Drug
Lead sponsor
Cleveland Sleep Research Center
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Middleburg Heights, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 22, 2015 · Synced Sep 25, 2026, 4:58 PM EDT
Completed Phase 2 Interventional Results available

Simulated Driving Study in Restless Legs Syndrome

NCT01332318
View directory record Official record
Conditions
Restless Legs Syndrome
Interventions
XP13512, Diphenhydramine, Placebo
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Jul 25, 2013 · Synced Sep 25, 2026, 4:58 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Opioid Sparing Effect of an ISP Nerve Block on Post-Op Pain Control in Posterior Cervical Spine Surgery

NCT06570577
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Inter-semispinalis Plane Block, Opioids
Procedure · Drug
Lead sponsor
Stony Brook University
Other
Eligibility
18 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 25, 2026, 4:58 PM EDT
Completed Phase 4 Interventional Results available

Gabapentin Enacarbil (GSK1838262) Adult Restless Leg Syndrome (RLS) Post Marketing Commitment Study

NCT01668667
View directory record Official record
Conditions
Restless Legs Syndrome
Interventions
GSK1838262 600 mg, GSK1838262 450 mg, GSK1838262 300 mg, GSK1838262 Placebo match
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years and older
Enrollment
501 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
42
States / cities
Phoenix, Arizona • Tucson, Arizona • Little Rock, Arkansas + 37 more
Source: ClinicalTrials.gov public record
Updated May 23, 2021 · Synced Sep 25, 2026, 4:58 PM EDT