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TerminatedNCT01148992Updated Jan 11, 2017

Interactions Between Intravenous (IV) Cocaine and Lofexidine

A Phase 1 interventional study of Lofexidine and Placebo in Cocaine Related Disorders, sponsored by National Institute on Drug Abuse (NIDA). Terminated at 2 sites in United States. Open to participants aged 18 Years to 50 Years. Per ClinicalTrials.gov, last updated 2017-01-11.

Sponsored by National Institute on Drug Abuse (NIDA) · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
16
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
All
01

Study summary

The purpose of this study is to assess potential interactions between intravenous (IV) cocaine and treatment with lofexidine.

Read the detailed description

To determine the safety of daily oral lofexidine alone and concurrent with IV cocaine infusions of 20 mg and 40 mg in cocaine-experienced, non-opiate-addicted volunteers.

02

Conditions studied

  • Cocaine Related Disorders
03

In context

Cocaine-Related Disorders

415 studies on the registry are indexed under Cocaine-Related Disorders; 12 are open to participants now.

This study's enrollment of 16 is below the median of 60 across 312 interventional studies indexed under Cocaine-Related Disorders.

Browse Cocaine-Related Disorders studies →

Lead sponsor

National Institute on Drug Abuse (NIDA) is the lead sponsor of 388 studies on the registry; 19 are open to participants now.

Of its 12 completed or terminated interventional studies of FDA-regulated products, 5 (42%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Be volunteers who meet Diagnostic and Statistical Manual of Mental Disorders Fourth Edition (DSM-IV) criteria for cocaine abuse or dependence and are non-treatment seeking at the time of the study.
  • Be between 18 and 50 years of age, inclusive.
  • Be currently use cocaine. Use must be confirmed by a positive urine test for cocaine metabolites once within the outpatient screening period.
  • Be able to verbalize understanding of the consent form and provide written informed consent.
  • Females must have a negative pregnancy test within 72 hours prior to receiving the first infusion of cocaine. They must also be postmenopausal, have had a hysterectomy, been sterilized, or agree to use one of the following methods of birth control:

    • diaphragm and condom by partner
    • intrauterine device (that does not contain progesterone) and condom by partner
    • sponge and condom by partner
    • complete abstinence from sexual intercourse

Note: Oral contraceptives, Depo-Provera, Norplant, Patch, and intrauterine progesterone contraceptive system are not allowed.

Exclusion criteria

Exclusion Criteria:

  • Please contact site for more information
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
16 participants (actual)

Study arms

  • Active comparator
    Lofexidine

    Drug: Lofexidine

  • Placebo comparator
    Placebo

    Drug: Placebo

Interventions

  • DrugLofexidine

    0.8mg alone and concurrent with IV cocaine infusions of 20 mg and 40 mg

  • DrugPlacebo

    0mg

06

What researchers measure

Primary outcomes

  1. Adverse Event and Cardiovascular Response

    Adverse Events will measured during follow-up at weeks 14-21

    Time frame: Daily, up to 9 days

Secondary outcomes

  1. Pharmacokinetics (PK) Parameter of Cocaine and Benzoylecgonine (BE)

    Time frame: Daily, up to 9 days

  2. PK of Lofexidine

    Time frame: Daily, up to 9 days

  3. Visual Analog Scale (VAS)

    Time frame: Daily, up to 9 days

  4. Brief Substance Abuse Craving Scale (BSCA)

    Time frame: Daily, up to 9 days

07

Study locations

2 sites
  • California Pacific Medical Center Research Institute
    San Francisco, California 94110, United States
  • Baylor College of Medicine
    Houston, Texas 77030, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 11, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01148992
Lead sponsor
National Institute on Drug Abuse (NIDA)
Responsible party
Sponsor
First posted
Jun 23, 2010
Start date
Aug 2010
Primary completion
Dec 2010
Completion
Mar 2011
Last update
Jan 11, 2017

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Aug 2016. You cannot join it, but the record below documents what was studied.

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