Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 2, 2026, 11:04 AM EDT

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Showing 1–5 of 5 matching trials from the live ClinicalTrials.gov search.
Conditions
Muscle Spasticity
Interventions
XP19986 SR1, 10 mg BID, XP19986 SR1, 20 mg BID, XP19986 SR1, 30 mg BID, Placebo
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
11
States / cities
Downey, California • Gilroy, California • Pasadena, California + 8 more
Conditions
Multiple Sclerosis
Interventions
Arbaclofen placarbil 15 mg BID, Placebo, Arbaclofen placarbil 30 mg BID, Arbaclofen placarbil 45 mg BID
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
228 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
28
States / cities
Phoenix, Arizona • Tucson, Arizona • Berkeley, California + 25 more
Conditions
Back Pain
Interventions
Arbaclofen placarbil, 20 mg, Placebo, Arbaclofen placarbil, 30 mg, Arbaclofen placarbil, 40 mg
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
161 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
20
States / cities
Litchfield Park, Arizona • Anaheim, California • San Diego, California + 16 more
Conditions
Gastroesophageal Reflux
Interventions
XP19986 SR3, 20 mg QD, XP19986 SR3, 40 mg QD, XP19986 SR3, 60 mg QD, XP19986 SR3, 30 mg BID, Placebo
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Irvine, California
Conditions
Gastroesophageal Reflux Disease
Interventions
arbaclofen placarbil-Cohort 1, Placebo-Cohort 5, arbaclofen placarbil-Cohort 2, arbaclofen placarbil-Cohort 3, arbaclofen placarbil-Cohort 4, PPI
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
460 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
62
States / cities
Huntsville, Alabama • Chandler, Arizona • Mesa, Arizona + 56 more