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New drug shows promise in taming tardive dyskinesia movements

NCT ID NCT02291861

Completed Symptom relief Sponsor: Auspex Pharmaceuticals, Inc. Source: ClinicalTrials.gov ↗

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study tested a drug called SD-809 (deutetrabenazine) in 298 people with moderate to severe tardive dyskinesia, a condition causing uncontrollable movements. Participants received either the drug or a placebo for 12 weeks. The main goal was to see if the drug reduced the severity of these movements, measured by a standard rating scale. The trial was completed and results showed improvement in the drug group compared to placebo.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

deutetrabenazine (SD-809)

What this could lead to

If it works, this could provide a treatment option to reduce the severity of involuntary movements in people with tardive dyskinesia.

What could go wrong

This is a completed phase 3 trial, but results may not apply to all patients. The drug may cause side effects and is not a cure.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

central nervous system disorder Dyskinesias movement disorder nervous system disorder Neurologic Manifestations Signs and Symptoms tardive dyskinesia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

TARDIVE DYSKINESIA

Contacts and locations

Locations

  • Teva Investigational Site 101

    Glen Burnie, Maryland, 21061, United States

  • Teva Investigational Site 102

    Orange, California, 92868, United States

  • Teva Investigational Site 104

    San Bernardino, California, 92408, United States

  • Teva Investigational Site 106

    Irvine, California, 92697, United States

  • Teva Investigational Site 107

    Anaheim, California, 92804, United States

  • Teva Investigational Site 108

    Anaheim, California, 92805, United States

  • Teva Investigational Site 110

    San Diego, California, 92108, United States

  • Teva Investigational Site 112

    Orlando, Florida, 32803, United States

  • Teva Investigational Site 113

    Chicago, Illinois, 60612, United States

  • Teva Investigational Site 115

    Salt Lake City, Utah, 84105, United States

  • Teva Investigational Site 117

    Gainesville, Florida, 32607, United States

  • Teva Investigational Site 118

    Creve Coeur, Missouri, 63141, United States

  • Teva Investigational Site 121

    Los Angeles, California, 90033, United States

  • Teva Investigational Site 123

    Glendale, California, 91206, United States

  • Teva Investigational Site 128

    Albuquerque, New Mexico, 87106, United States

  • Teva Investigational Site 129

    Englewood, Colorado, 80113, United States

  • Teva Investigational Site 131

    Chicago, Illinois, 60611, United States

  • Teva Investigational Site 133

    Charleston, South Carolina, 29425, United States

  • Teva Investigational Site 135

    Boston, Massachusetts, 02215, United States

  • Teva Investigational Site 138

    Asheville, North Carolina, 28805, United States

  • Teva Investigational Site 139

    New Haven, Connecticut, 06519, United States

  • Teva Investigational Site 141

    Salt Lake City, Utah, 84108, United States

  • Teva Investigational Site 142

    Kansas City, Missouri, 64108, United States

  • Teva Investigational Site 144

    Port Charlotte, Florida, 33980, United States

  • Teva Investigational Site 145

    Tuscaloosa, Alabama, 35404, United States

  • Teva Investigational Site 146

    Raleigh, North Carolina, 27610, United States

  • Teva Investigational Site 147

    Los Angeles, California, 90095-1769, United States

  • Teva Investigational Site 148

    New York, New York, 10032, United States

  • Teva Investigational Site 149

    Memphis, Tennessee, 38163, United States

  • Teva Investigational Site 150

    Lake City, Florida, 32025, United States

  • Teva Investigational Site 151

    Fort Worth, Texas, 76104, United States

  • Teva Investigational Site 153

    Miami, Florida, 33135, United States

  • Teva Investigational Site 154

    Baltimore, Maryland, 21287, United States

  • Teva Investigational Site 155

    Augusta, Georgia, 30912, United States

  • Teva Investigational Site 156

    Washington D.C., District of Columbia, 20007, United States

  • Teva Investigational Site 157

    Boca Raton, Florida, 33486, United States

  • Teva Investigational Site 160

    Irvine, California, 92614, United States

  • Teva Investigational Site 161

    St Louis, Missouri, 63109, United States

  • Teva Investigational Site 162

    Miami, Florida, 33165, United States

  • Teva Investigational Site 164

    Kansas City, Kansas, 66160, United States

  • Teva Investigational Site 165

    Decatur, Georgia, 30033, United States

  • Teva Investigational Site 166

    Waukesha, Wisconsin, 53188, United States

  • Teva Investigational Site 167

    Richland, Washington, 99352, United States

  • Teva Investigational Site 168

    Burlington, Vermont, 05401, United States

  • Teva Investigational Site 169

    San Rafael, California, 94901, United States

  • Teva Investigational Site 170

    Oceanside, California, 92056, United States

  • Teva Investigational Site 171

    Charlottesville, Virginia, 22903, United States

  • Teva Investigational Site 172

    Commack, New York, 11725, United States

  • Teva Investigational Site 174

    Norwalk, California, 90650, United States

  • Teva Investigational Site 175

    St Louis, Missouri, 63104, United States

  • Teva Investigational Site 176

    Loma Linda, California, 92354, United States

  • Teva Investigational Site 177

    Imperial, California, 92251, United States

  • Teva Investigational Site 178

    Lincoln, Nebraska, 68526-9467, United States

  • Teva Investigational Site 501

    Wolfach, 77709, Germany

  • Teva Investigational Site 502

    Gera, 07551, Germany

  • Teva Investigational Site 503

    Haag in Oberbayern, 83527, Germany

  • Teva Investigational Site 504

    Mainz, 55131, Germany

  • Teva Investigational Site 507

    Prien am Chiemsee, 83209, Germany

  • Teva Investigational Site 508

    Lodz, 90-130, Poland

  • Teva Investigational Site 509

    Krakow, 31-505, Poland

  • Teva Investigational Site 510

    Bydgoszcz, 85-015, Poland

  • Teva Investigational Site 511

    Lublin, 20-064, Poland

  • Teva Investigational Site 512

    Katowice, 40-097, Poland

  • Teva Investigational Site 513

    Gdansk, 80-952, Poland

  • Teva Investigational Site 514

    Bełchatów, 97-400, Poland

  • Teva Investigational Site 515

    Lublin, 20-090, Poland

  • Teva Investigational Site 516

    Wroclaw, 50-227, Poland

  • Teva Investigational Site 517

    Choroszcz, 16-070, Poland

  • Teva Investigational Site 518

    Sosnowiec, 41-200, Poland

  • Teva Investigational Site 519

    Bydgoszcz, 85-080, Poland

  • Teva Investigational Site 520

    Krakow, 30-349, Poland

  • Teva Investigational Site 521

    Pruszków, 05-802, Poland

  • Teva Investigational Site 522

    Torun, 87-100, Poland

  • Teva Investigational Site 523

    Chełmno, 86-200, Poland

  • Teva Investigational Site 524

    Lublin, 20-831, Poland

  • Teva Investigational Site 525

    Domaša, 935 61, Slovakia

  • Teva Investigational Site 526

    Rožňava, 04801, Slovakia

  • Teva Investigational Site 527

    Košice, 04017, Slovakia

  • Teva Investigational Site 528

    Rimavská Sobota, 979 12, Slovakia

  • Teva Investigational Site 529

    Bratislava, 826 06, Slovakia

  • Teva Investigational Site 530

    Prague, 16000, Czechia

  • Teva Investigational Site 531

    Prague, 181 02, Czechia

  • Teva Investigational Site 532

    Prague, 158 00, Czechia

  • Teva Investigational Site 533

    Prague, 100 00, Czechia

  • Teva Investigational Site 534

    Prague, 190 00, Czechia

  • Teva Investigational Site 535

    Litoměřice, 412 01, Czechia

  • Teva Investigational Site 536

    Bydgoszcz, 85-156, Poland

  • Teva Investigational Site 537

    Budapest, 1204, Hungary

  • Teva Investigational Site 538

    Budapest, 1135, Hungary

  • Teva Investigational Site 539

    Doba, 8482, Hungary

  • Teva Investigational Site 540

    Balassagyarmat, 999999, Hungary

  • Teva Investigational Site 541

    Budapest, 1148, Hungary

  • Teva Investigational Site 542

    Budapest, H-1135, Hungary

  • Teva Investigational Site 544

    Taufkirchen, 84416, Germany

  • Teva Investigational Site 545

    Kalocsa, 6300, Hungary

  • Teva Investigational Site 546

    Győr, 9024, Hungary

  • Teva Investigational Site 547

    Szeged, 6725, Hungary

  • Teva Investigational Site 549

    Olsztyn, 10-443, Poland

  • Teva Investigational Site 550

    Warsaw, 00-465, Poland

  • Teva Investigational Site 552

    Katowice, 40-123, Poland

  • Teva Investigational Site 554

    Bialystok, 15-756, Poland

  • Teva Investigational Site 555

    Warsaw, 00-669, Poland

  • Teva Investigational Site 556

    Hostivice, 999999, Czechia

  • Teva Investigational Site 557

    Pilsen, 312 00, Czechia

  • Teva Investigational Site 558

    Hradec Králové, 503 41, Czechia

  • Teva Investigational Site 559

    Havířov, 736 01, Czechia