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Effect of Antidepressants on Back Pain
This study has been completed.
First Received: July 3, 2001   Last Updated: September 17, 2009   History of Changes
Sponsor: Department of Veterans Affairs
Information provided by: Department of Veterans Affairs
ClinicalTrials.gov Identifier: NCT00018200
  Purpose

The purpose of this study is to determine whether different types of antidepressant medicines relieve back pain that has lasted at least six months on a daily basis. Study participants will be assigned to treatment with either a antidepressant acting on the serotonin system in the brain (fluoxetine), one acting on the noradrenoline system (desipramine, or to a control medication not expected to relieve pain (benztropine). Each participant will be seen at least nine times during their 12 weeks on medication. This is a phase 2/3, outpatient study.


Condition Intervention Phase
Back Pain
Sciatica
Drug: Desipramine
Drug: Fluoxetine
Drug: Benztropine
Phase II

Study Type: Interventional
Study Design: Treatment, Randomized, Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Placebo Control, Parallel Assignment, Efficacy Study
Official Title: Efficacy of Antidepressants in Chronic Back Pain

Resource links provided by NLM:


Further study details as provided by Department of Veterans Affairs:

Primary Outcome Measures:
  • Descriptor Differential Scale Pain Intensity [ Time Frame: 12 weeks post baseline ] [ Designated as safety issue: No ]

Enrollment: 130
Study Start Date: April 1999
Study Completion Date: March 2004
Primary Completion Date: December 2003 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
1: Experimental
Desipramine, low, middle or high exposure
Drug: Desipramine
Low exposure (40-70 ng/mL), Middle exposure (70-130 ng/mL), High exposure (130-200 ng/mL)
2: Experimental
Fluoxetine, low, middle, or high exposure
Drug: Fluoxetine
Low exposure (200-399 ng/mL), Middle exposure (400-499 ng/mL), High exposure (500-700ng/mL)
3: Placebo Comparator
Benztropine .125-.5mg daily
Drug: Benztropine
Daily dose 0.125 to 0.5mg

  Eligibility

Ages Eligible for Study:   18 Years to 65 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Chronic back pain (pain on a daily basis for six months or longer)
  • Age 18-65
  • No major medical illness

Exclusion Criteria:

  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00018200

Locations
United States, California
VA San Diego Healthcare System, San Diego
San Diego, California, United States, 92161
Sponsors and Collaborators
Investigators
Principal Investigator: Joseph H. Atkinson, MD VA San Diego Healthcare System, San Diego
  More Information

Publications:
Responsible Party: Department of Veterans Affairs ( Atkinson, Joseph - Principal Investigator )
Study ID Numbers: ADRD-018-98F
Study First Received: July 3, 2001
Last Updated: September 17, 2009
ClinicalTrials.gov Identifier: NCT00018200     History of Changes
Health Authority: United States: Federal Government

Keywords provided by Department of Veterans Affairs:
analgesia
Back pain
sciatica

Additional relevant MeSH terms:
Dopamine Uptake Inhibitors
Sciatic Neuropathy
Parasympatholytics
Neurotransmitter Uptake Inhibitors
Neurotransmitter Agents
Adrenergic Agents
Molecular Mechanisms of Pharmacological Action
Cholinergic Antagonists
Adrenergic Uptake Inhibitors
Anti-Dyskinesia Agents
Physiological Effects of Drugs
Psychotropic Drugs
Antiparkinson Agents
Pain
Cholinergic Agents
Desipramine
Mononeuropathies
Sciatica
Signs and Symptoms
Neuromuscular Diseases
Therapeutic Uses
Antidepressive Agents, Second-Generation
Antidepressive Agents
Neuralgia
Nervous System Diseases
Enzyme Inhibitors
Serotonin Uptake Inhibitors
Back Pain
Pharmacologic Actions
Antidepressive Agents, Tricyclic

ClinicalTrials.gov processed this record on February 08, 2010