Effects of Gabapentin Versus Placebo on Buprenorphine Detoxification of Opioid-dependent Individuals

Study Overview
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Brief Summary
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This study involves inducting treatment seeking opioid dependent participants onto buprenorphine. Once the participant reaches a stable dose they will receive either placebo or gabapentin to determine if gabapentin helps ease withdrawal symptoms while the participant undergoes a 10-day buprenorphine detoxification.

Official Title
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Effects of Gabapentin Versus Placebo on Buprenorphine Detoxification of Opioid-dependent Individuals

Conditions
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Opioid Dependence, Opioid Withdrawal, Opioid Detoxification

Intervention / Treatment
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* Drug: Buprenorphine


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Availability to attend clinic 6 days a week for approximately 30-60 minutes. Participants must fulfill DSM-IV criteria for opioid dependence. These criteria will be ascertained in the following manner: the physician will determine whether the individual is appropriate based on several clinical assessments that are routinely employed by methadone program physicians, including history and severity of opioid use, presence of track marks, prior treatment history, self-reported and/or observed signs and symptoms of opioid withdrawal. If any individual's degree of opioid dependence is questionable, that person will be excluded from further consideration as a participant. Participants must submit a urine negative for drugs of abuse other than opioids prior to starting the study. Exclusion Criteria: Unstable medical condition or stable medical condition that would interact with study medications or participation. History of major psychiatric disorder (psychosis, schizophrenia, bipolar, depression) Pregnancy or plans to become pregnant or inadequate birth control (adequate birth control includes abstinence, condoms, birth control pills, etc). Present or recent use of over-the-counter psychoactive drug, prescription psychoactive drug or drug (including Maalox) that would have major interaction with drugs to be tested. Liver function tests greater than 3 times normal, BUN and Creatinine outside normal range, or thyroid function tests outside normal range. EKG abnormalities including but not limited to: bradycardia (<60 bpm); prolonged QTc interval (>450 msec); Wolff-Parkinson White syndrome; wide complex tachycardia; 2nd degree, Mobitz type II heart block; 3rd degree heart block; left or right bundle branch block. Physical dependence on alcohol or drugs other than opioids or tobacco (as determined by physician assessment).

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Gabapentin<br>Buprenorphine will be given along with 2 capsules of gabapentin in the morning and 2 take-home capsules of gabapentin for night. | Drug: Buprenorphine<br>* Induction onto buprenorphine to a stable dose of 12mg/day. Then induction onto either 0 or 1600mg of gabapentin. Once the maintenance dose of gabapentin is reached a 10-day buprenorphine detoxification will begin.<br>* Other names: Neurontin, Suboxone,;|
| Placebo Comparator: Placebo<br>Buprenorphine will be given, with 2 capsules of placebo in the morning and 2 take-home capsules of placebo in the evening | Drug: Buprenorphine<br>* Induction onto buprenorphine to a stable dose of 12mg/day. Then induction onto either 0 or 1600mg of gabapentin. Once the maintenance dose of gabapentin is reached a 10-day buprenorphine detoxification will begin.<br>* Other names: Neurontin, Suboxone,;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Illicit Opioid Use as Determine by Urine Dipsticks | urine data are from those obtained during the buprenorphine taper | 3x weekly during wks 3 and 4 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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opioid dependent, detoxification, buprenorphine, suboxone, opiate