Use of Donepezil for Treatment of Cocaine Dependence

This study has been completed.
Information provided by (Responsible Party):
Department of Veterans Affairs Identifier:
First received: April 27, 2007
Last updated: December 2, 2013
Last verified: November 2013

The purpose of this study is to determine the safety of intravenous cocaine in subjects receiving oral donepezil.

Condition Intervention Phase
Cocaine Abuse and Dependence
Drug: Donepezil, 5 mg daily
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: Donepezil Effects on Cocaine Craving and Pharmacokinetics

Resource links provided by NLM:

Further study details as provided by Department of Veterans Affairs:

Primary Outcome Measures:
  • Cocaine safety in subjects receiving donepezil [ Time Frame: Two weeks ] [ Designated as safety issue: Yes ]
    Patients will be evaluated for clinical and laboratory adverse events

Secondary Outcome Measures:
  • Cocaine pharmacokinetics and subjective effects [ Time Frame: 8 Hours ] [ Designated as safety issue: No ]
    Plasma cocaine determined by mass spectrophotometry and subjective effects by VAS (visual analogue scale).

Enrollment: 12
Study Start Date: February 2007
Study Completion Date: September 2008
Primary Completion Date: September 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Arm 1
Donepezil, 5 mg daily
Drug: Donepezil, 5 mg daily
This is a commercially available cholinesterase inhibitor that is approved for use in Alzheimer's disease.
Other Name: Aricept

Detailed Description:

This is a randomized, double-blind, double-dummy, placebo controlled, inpatient, single-center, parallel group evaluation of the potential for oral donepezil to attenuate cocaine-induced craving. Non-treatment-seeking cocaine-experienced volunteers will receive baseline treatment with intravenous cocaine (30Mg). Forty-two subjects that tolerate baseline cocaine infusions will then receive two subsequent intravenous doses of cocaine during double-blind treatment with oral placebo or 5 mg daily of donepezil. Each dose of cocaine will be preceded or followed by administration of intravenous placebo (saline) in a random order.


Ages Eligible for Study:   18 Years to 50 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Non-treatment seeking, experienced cocaine users, who have used cocaine by smoking or intravenous injection within the four weeks prior to screening, and must supply a cocaine-positive urine obtained within four weeks of entry into the study.

Exclusion Criteria:

  • Shows signs of psychostimulant toxicity, or has a history of a medical adverse reaction to cocaine or other psychostimulants, including loss of consciousness, chest pain, cardiac ischemia, or seizure.
  • Has a current psychiatric disorder other than drug abuse or dependence or dementia.
  • Meets the DSM-IV criteria for dependence to opiates, benzodiazepines, alcohol, or other sedative-hypnotics.
  • Has received opiate-substitution therapy (methadone, LAAM, or buprenorphine) within two months prior to enrollment.
  • Has current or past history of seizure disorder, including alcohol- or psychostimulant- related seizures, or family history of seizure disorder.
  • Has a diagnosis of adult asthma, or chronic obstructive pulmonary disease, including a history of acute asthma within the past two years, and those with current or recent (with the past two years) treatment with an inhaled or oral beta-adrenergic agonist.
  • Has had head trauma that resulted in neurological sequelae.
  • Has an unstable medical condition, which, in the judgement of investigators, would make participation hazardous.
  Contacts and Locations
Please refer to this study by its identifier: NCT00467389

United States, Missouri
VA Medical Center
Kansas City, Missouri, United States, 64128
Sponsors and Collaborators
Principal Investigator: Kenneth Grasing, MD Department of Veterans Affairs
  More Information

Responsible Party: Department of Veterans Affairs Identifier: NCT00467389     History of Changes
Other Study ID Numbers: NEUA-014-05S
Study First Received: April 27, 2007
Last Updated: December 2, 2013
Health Authority: United States: Federal Government
United States: Food and Drug Administration

Keywords provided by Department of Veterans Affairs:
Cholinesterase Inhibitor

Additional relevant MeSH terms:
Cocaine-Related Disorders
Substance-Related Disorders
Mental Disorders
Cholinesterase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Cholinergic Agents
Neurotransmitter Agents
Physiological Effects of Drugs
Nootropic Agents
Central Nervous System Agents
Therapeutic Uses processed this record on April 16, 2014