Atomoxetine Effects in Humans

Official Title: “Atomoxetine Effects in Humans”

A total of 18 healthy volunteers will participate in this four-week, within-groups, double-blind, placebo-controlled study. The study has two phases separated by a 4 to 15-day washout period. Subjects will be randomly assigned to receive either 40 mg atomoxetine or placebo. For Phase I, subjects will be assigned to atomoxetine or placebo for 4 days. After receiving medication or placebo for three days, subjects will have a 6-hour laboratory session, where responses to physical and psychological stress of a 20 mg/70 kg (20 mg maximum) dose of d-amphetamine will be measured. Several physiological, hormonal, and subjective outcome measures will be obtained during the experimental sessions. Subjects will then have a 4-15 day washout period and will be crossed over to the alternative treatment for Phase II.

This pilot study will examine the effects of a norepinephrine reuptake blocker, atomoxetine, on physiological and subjective responses to physical and psychological models of stress and oral amphetamine in healthy volunteers. The physical stress model will be the cold pressor test (CPT) and the psychological stress will be the paced auditory serial addition task (PASAT).

Our overall hypothesis is that atomoxetine treatment, compared to placebo, will attenuate the physiological and subjective responses to stress and d-amphetamine.

2. Research Design: Double-blind, placebo-controlled, within-groups, outpatient study.

3. Methodology: A total of 18 healthy volunteers will participate in this four-week, within-groups, double-blind, placebo-controlled study. The study has two phases separated by a 4 to 15-day washout period. Subjects will be randomly assigned to receive either 40 mg atomoxetine or placebo. For Phase I, subjects will be assigned to atomoxetine or placebo for 4 days. After receiving medication or placebo for three days, subjects will have a 6-hour laboratory session, where responses to physical and psychological stress of a 20 mg/70 kg (20 mg maximum) dose of d-amphetamine will be measured. Several physiological, hormonal, and subjective outcome measures will be obtained during the experimental sessions. Subjects will then have a 4-15 day washout period and will be crossed over to the alternative treatment for Phase II.

4. Findings: Since our last renewal, a total of 16 subjects signed the consent form. Among those, 6 subjects did not return after signing the consent form. An additional 2 subjects were randomized but did not complete the study. One subjects started 3 times was randomized 3 times therefore counted three times in enrollment. Currently still enrolling subjects. (2/7/07)

Have completed this study with 10 subjects, study was published. This study has been entered twice.

Intervention(s) in this Clinical Trial

• Drug: Atomoxetine
  • atomoxetine 40mg per day or placebo For Phase I, subjects will be assigned to atomoxetine or placebo for 4 days. Subjects will then have a 4-15 day washout period and will be crossed over to the alternative treatment for Phase II.

Arms, Groups and Cohorts in this Clinical Trial

• Experimental: 1
  • atomoxetine 40mg per day
• Placebo Comparator: 2
  • second arm is placebo, sugar pill

Primary Measures

• Atomoxetine treatment, compared to placebo, will attenuate the physiological and subjective responses to stress and d-amphetamine
  • Time Frame: one year
    Safety Issue?: Yes

Inclusion Criteria:

• Female and males age 18 yrs to 45 yrs
• Current history of good health and normal ECG
• not pregnant , nor breast feeding
• using acceptable birth control methods

Exclusion Criteria:

• History of heart disease, hypertension, renal or hepatic diseases, glaucoma,hyperthyroidism,
• Current use of psychotropic medication
• Current dependence on alcohol or on drugs or treatments for drug or alcohol addiction within the past 5 years

Gender Eligibility for this Clinical Trial: Both

Minimum Age for this Clinical Trial: 18 Years

Maximum Age for this Clinical Trial: 45 Years

Are Healthy Volunteers Accepted for this Clinical Trial?: Accepts Healthy Volunteers

Lead Investigator: Yale University Other

Overall Clinical Trial Officials and Contacts

Mehmet Sofuoglu, M.D., Ph.D. Principal Investigator Yale University  

Information obtained from ClinicalTrials.gov on February 12, 2012

Link to the current ClinicalTrials.gov record. http://clinicaltrials.gov/show/NCT00607568

Study ID Number: MIRECC HIC 0605001441

ClinicalTrials.gov Identifier: NCT00607568

Health Authority: United States: Federal Government