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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Fampridine Clear all
Completed Phase 2 Interventional Results available

Study and Treatment of Visual Dysfunction and Motor Fatigue in Multiple Sclerosis

NCT02391961
View directory record Official record
Conditions
Multiple Sclerosis, Internuclear Ophthalmoplegia, Fatigue
Interventions
Dalfampridine, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 3, 2020 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 1 Interventional Results available

Safety and Tolerability of Dalfampridine in Subjects With Cerebral Palsy

NCT01468350
View directory record Official record
Conditions
Cerebral Palsy (CP)
Interventions
dalfampridine-ER 10mg, Placebo
Drug · Other
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
18 Years to 70 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
11
States / cities
Birmingham, Alabama • Downey, California • Los Angeles, California + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2014 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 3 Interventional Results available

Study of Fampridine-ER Tablets in Patients With Multiple Sclerosis

NCT01328379
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Dalfampridine-ER 5mg, Dalfampridine-ER 10mg, Placebo
Drug · Other
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
18 Years to 70 Years
Enrollment
430 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
70
States / cities
Cullman, Alabama • Phoenix, Arizona • Sun City, Arizona + 59 more
Source: ClinicalTrials.gov public record
Updated Sep 4, 2013 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A Randomized Trial to Evaluate Ampyra for Gait Impairment in Parkinson's Disease

NCT01491022
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Ampyra first, then Placebo, placebo first, then Ampyra
Drug
Lead sponsor
University of Miami
Other
Eligibility
45 Years to 80 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 1, 2018 · Synced Sep 20, 2026, 12:05 PM EDT
Approved For Marketing No phase listed Expanded access

3,4-Diaminopyridine Use in Lambert-Eaton Myasthenic Syndrome(LEMS) and Congenital Myasthenic Syndromes (CMS)

NCT00872950
View directory record Official record
Conditions
Lambert-Eaton Myasthenic Syndrome, Congenital Myasthenic Syndrome
Interventions
3,4-DIAMINOPYRIDINE
Drug
Lead sponsor
Lahey Clinic
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Burlington, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 10, 2022 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 4 Interventional Results available

A Placebo Controlled Trial of Dalfampridine ER for Ambulatory Activity in People With Multiple Sclerosis

NCT01356940
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
dalfampridine ER, placebo
Drug
Lead sponsor
Brown, Theodore R., M.D., MPH
Individual
Eligibility
18 Years to 75 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Kirkland, Washington
Source: ClinicalTrials.gov public record
Updated Oct 30, 2018 · Synced Sep 20, 2026, 12:05 PM EDT
Withdrawn Phase 2 Interventional

4-aminopyridine Treatment for Nerve Injury From Radical Retro-Pubic Prostatectomy

NCT03658408
View directory record Official record
Conditions
Prostate Disease
Interventions
4-aminopyridine, placebo
Drug
Lead sponsor
University of Rochester
Other
Eligibility
45 Years to 75 Years · Male only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Nov 1, 2018 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effect of Dalfampridine (4-AP) on Genioglossus Muscle Activity in Healthy Adults

NCT02656160
View directory record Official record
Conditions
Sleep Apnea, Obstructive
Interventions
Placebo, Dalfampridine
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 14, 2017 · Synced Sep 20, 2026, 12:05 PM EDT
Approved For Marketing No phase listed Expanded access

Expanded Access Study Amifampridine Phosphate in Lambert-Eaton Myasthenic Syndrome (LEMS),Congenital Myasthenic Syndrome

NCT02189720
View directory record Official record
Conditions
Congenital Myasthenic Syndrome, Lambert-Eaton Myasthenic Syndrome, Nystagmus, Acquired
Interventions
Amifampridine Phosphate
Drug
Lead sponsor
Catalyst Pharmaceuticals, Inc.
Industry
Eligibility
2 Years and older
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 25, 2025 · Synced Sep 20, 2026, 12:05 PM EDT
Completed No phase listed Observational Results available

An Open Label, Proof of Concept Study to Evaluate the Effects of Dalfampridine Withdrawal on Gait and Balance Parameters in Subjects With Multiple Sclerosis (MS)

NCT01535664
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Withdrawal of dalfampridine-ER 10mg
Other
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Oct 13, 2013 · Synced Sep 20, 2026, 12:05 PM EDT
No Longer Available No phase listed Expanded access

Treatment of Lambert-Eaton Myasthenic Syndrome (LEMS) With 3, 4 DAP

NCT01378546
View directory record Official record
Conditions
Lambert Eaton Myasthenic Syndrome (LEMS)
Interventions
3,4-diaminopyridine
Drug
Lead sponsor
Louis H. Weimer, MD
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2005
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 17, 2013 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 3 Interventional Results available

Open-Label Extension Study to Evaluate the Safety, Tolerability and Activity of Oral Fampridine-SR in Patients With Multiple Sclerosis

NCT00654927
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Fampridine-SR b.i.d. (Twice Daily)
Drug
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
18 Years to 70 Years
Enrollment
177 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2011
U.S. locations
20
States / cities
Phoenix, Arizona • Los Angeles, California • Atlanta, Georgia + 17 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2012 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Short and Long Term Treatment With 4-AP in Ambulatory SMA Patients

NCT01645787
View directory record Official record
Conditions
Spinal Muscular Atrophy
Interventions
4-aminopyridine, Placebo
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 50 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 2, 2024 · Synced Sep 20, 2026, 12:05 PM EDT
Recruiting Phase 3 Interventional

Dalfampridine Combined With Physical Therapy for Mobility Impairment in Multiple Sclerosis

NCT06136728
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Dalfampridine 10 MG [Ampyra], Physical therapy, Dalfampridine plus physical therapy
Drug · Behavioral · Other
Lead sponsor
MGH Institute of Health Professions
Other
Eligibility
25 Years to 75 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 3 Interventional Results available

Open-Label Extension Study to Evaluate the Safety, Tolerability and Activity of Oral Fampridine-SR in Patients With Multiple Sclerosis Who Participated in the MS-F204 Trial

NCT00649792
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Fampridine-SR
Drug
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
18 Years to 70 Years
Enrollment
214 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
38
States / cities
Phoenix, Arizona • Fayetteville, Arkansas • Berkeley, California + 33 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2012 · Synced Sep 20, 2026, 12:05 PM EDT
Recruiting Phase 1Phase 2 Interventional

Double Dose 4-AP on Functional Recovery After Spinal Cord Injury

NCT06853015
View directory record Official record
Conditions
SCI - Spinal Cord Injury
Interventions
Dalfampridine, Placebo, STDP stimulation, Exercise training
Drug · Other · Behavioral
Lead sponsor
Shirley Ryan AbilityLab
Other
Eligibility
18 Years to 85 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 2 Interventional Results available

A Phase 2b Study of Dalfampridine 10mg Extended Release Tablet in Subjects With Chronic Deficits After Ischemic Stroke

NCT01605825
View directory record Official record
Conditions
Ischemic Stroke
Interventions
placebo/dalfampridine-ER, dalfampridine-ER/placebo
Drug
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
18 Years to 85 Years
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
20
States / cities
Birmingham, Alabama • La Jolla, California • Newport Beach, California + 17 more
Source: ClinicalTrials.gov public record
Updated Jan 21, 2016 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 3 Interventional Results available

Amifampridine Phosphate for the Treatment of Congenital Myasthenic Syndromes

NCT02562066
View directory record Official record
Conditions
Myasthenic Syndromes, Congenital
Interventions
amifampridine phosphate, Placebo
Drug
Lead sponsor
Catalyst Pharmaceuticals, Inc.
Industry
Eligibility
2 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
4
States / cities
Los Angeles, California • Baltimore, Maryland • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2021 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 1 Interventional

Effect of Amifampridine on Neuromuscular Transmission in Patients Treated With OnabotulinumtoxinA

NCT05769478
View directory record Official record
Conditions
Botulism, Iatrogenic Botulism
Interventions
Amifampridine
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 80 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 2, 2025 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 4 Interventional

A New Medicine to Treat Nonarteritic Anterior Ischemic Optic Neuropathy (NAION)

NCT01975324
View directory record Official record
Conditions
Non Arteritic Ischemic Optic Neuropathy
Interventions
dalfampridine, Placebo
Drug
Lead sponsor
Neuro-Ophthalmologic Associates, PC
Other
Eligibility
40 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 24, 2016 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Early Phase 1 Interventional

Effects of 4-AP on Functional SCI Recovery

NCT05447676
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Dalfampridine, Placebo drug, STDP stimulation, Exercise training
Drug · Other · Behavioral
Lead sponsor
Shirley Ryan AbilityLab
Other
Eligibility
18 Years to 85 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 20, 2026, 12:05 PM EDT
No Longer Available No phase listed Expanded access

Treatment Use of 3,4-Diaminopyridine

NCT01765140
View directory record Official record
Conditions
Myasthenic Syndromes, Congenital
Interventions
3,4-diaminopyridine
Drug
Lead sponsor
Vern C. Juel, M.D.
Other
Eligibility
Not listed
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 19, 2025 · Synced Sep 20, 2026, 12:05 PM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Sustained Release Dalfampridine in Transverse Myelitis (Re-Launch)

NCT02166346
View directory record Official record
Conditions
Transverse Myelitis, Neuromyelitis Optica, Idiopathic Transverse Myelitis, Myelitis NOS
Interventions
Dalfampridine, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 70 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 16, 2018 · Synced Sep 20, 2026, 12:05 PM EDT