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Assessment of GVG for the Treatment of Methamphetamine Dependence

This study has been completed.
University of California, Los Angeles
Information provided by:
National Institute on Drug Abuse (NIDA) Identifier:
First received: July 24, 2007
Last updated: August 6, 2008
Last verified: August 2008
The purpose of this study is to find out if GVG can reduce drug use and determine safety and effects of GVG when used together with methamphetamine. This study involves staying in the hospital for 21 days. Participants will receive either placebo or GVG, and a limited amount if methamphetamine will be injected on some study days. This study will enroll people that use methamphetamine. Participants will be compensated.

Condition Intervention Phase
Methamphetamine Addiction Drug: GVG Drug: placebo Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Official Title: Phase 1 Study of Vigabatrin (GVG) for Methamphetamine Dependence

Resource links provided by NLM:

Further study details as provided by National Institute on Drug Abuse (NIDA):

Enrollment: 17
Study Start Date: July 2006
Study Completion Date: June 2008
Primary Completion Date: April 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
Drug: GVG
5 grams GVG
Other Name: vigabatrin
Placebo Comparator: 2
Drug: placebo


Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Be English-speaking volunteers who are not seeking treatment at the time of the study;
  2. Be between 18-55 years of age;
  3. Meet DSM-IV TR criteria for MA abuse or dependence;
  4. Have a self-reported history of using MA by the smoked or IV route, for at least 2 years.
  5. Have vital signs as follows: resting pulse between 50 and 90 bpm, blood pressures between 85-150mm Hg systolic and 45-90mm Hg diastolic; this criterion must be met within 2 days of admission.
  6. Have hematology and chemistry laboratory tests that are within normal (+/- 10%) limits with the following exceptions: a) liver function tests (total bilirubin, ALT, AST, and alkaline phosphatase) < 3 x the upper limit of normal, and b) kidney function tests (creatinine and BUN) < 2 x the upper limit of normal;
  7. Have a baseline ECG that demonstrates normal sinus rhythm, normal conduction, and no clinically significant arrhythmias;
  8. Be able to fully cooperate with visual field testing to the point that a valid test is obtained during screening/baseline.
  9. In the judgment of the study ophthalmologist, have visual fields within normal limits for age during the screening/baseline measurements;
  10. Have acceptable ERG results for initiation of treatment with GVG (in the judgment of Drs. Nusinowitz and Newton, with ophthalmologic consultation as needed) , including having a value of the 30 Hz Flicker a-b amplitude as measured during the screening/baseline electroretinogram evaluations of 52 μV or above;
  11. Have a medical history and brief physical examination demonstrating no clinically significant contraindications for study participation, in the judgment of the admitting physician and the principal investigator.

Exclusion Criteria:

  1. Have any history or evidence suggestive of seizure disorder or brain injury;
  2. Have any previous medically adverse reaction to MA, including loss of consciousness, chest pain, or epileptic seizure;
  3. Have neurological or psychiatric disorders, such as:

    • psychosis, bipolar illness or major depression as assessed by the MINI;
    • organic brain disease or dementia assessed by clinical interview;
    • history of any psychiatric disorder which would require ongoing treatment or which would make study compliance difficult;
    • history of suicide attempts within the past three months assessed by the MINI and/or current suicidal ideation/plan as assessed by the MINI;
  4. Have evidence of clinically significant heart disease or hypertension, as determined by the PI;
  5. Have a family history in first-degree relatives of early cardiovascular morbidity or mortality, as determined by the PI;
  6. Have any ophthalmologic disorder (e.g., glaucoma, cataracts, optic nerve disease, fixation problems, etc.) which, in the judgment of the study ophthalmologist, would:

    • make it difficult to obtain valid ophthalmologic perimetry, or electroretinography (ERG) assessments, or
    • increase the risks of visual side effects associated with VGB.
  7. Have evidence of untreated or unstable medical illness including: neuroendocrine, autoimmune, renal, hepatic, or active infectious disease;
  8. Have HIV and are currently symptomatic, have a diagnosis of AIDS, or are receiving antiretroviral medication;
  9. Be pregnant or nursing. Other females must either be unable to conceive (i.e., surgically sterilized, sterile, or post-menopausal) or be using a reliable form of contraception (e.g., abstinence, birth control pills, intrauterine device, condoms, or spermicide). All females must provide negative pregnancy urine tests before study entry, upon hospital admission, and at the end of study participation;
  10. Have any history of asthma, chronic coughing and wheezing, or other respiratory illnesses;
  11. Currently use alpha or beta agonists, theophylline, or other sympathomimetics;
  12. Have any other illness, condition, or use of medications, which in the opinion of the PI and/or the admitting physician would preclude safe and/or successful completion of the study.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00506935

United States, California
Los Angeles, California, United States, 90024
Sponsors and Collaborators
National Institute on Drug Abuse (NIDA)
University of California, Los Angeles
  More Information

Responsible Party: Thomas Newton, UCLA Identifier: NCT00506935     History of Changes
Other Study ID Numbers: #05-10-091-01
Study First Received: July 24, 2007
Last Updated: August 6, 2008

Keywords provided by National Institute on Drug Abuse (NIDA):

Additional relevant MeSH terms:
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
GABA Agents
Neurotransmitter Agents
Physiological Effects of Drugs
Central Nervous System Stimulants
Autonomic Agents
Peripheral Nervous System Agents
Dopamine Agents
Adrenergic Agents
Adrenergic Uptake Inhibitors
Neurotransmitter Uptake Inhibitors
Membrane Transport Modulators
Dopamine Uptake Inhibitors processed this record on June 23, 2017