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Effects of Therapeutic Doses of Acetaminophen in Moderate Drinkers

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ClinicalTrials.gov Identifier: NCT00400621
Recruitment Status : Completed
First Posted : November 17, 2006
Last Update Posted : November 17, 2006
Information provided by:

November 16, 2006
November 17, 2006
November 17, 2006
April 2003
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mean change in serum ALT between treatment groups
Same as current
No Changes Posted
  • proportion of patients that developed an abnormal ALT
  • proportion of patients that developed hepatoxicity (ALT>1000 IU>L)
  • proportion of patients that developed drug induced liver injury
Same as current
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Effects of Therapeutic Doses of Acetaminophen in Moderate Drinkers
Assessment of Hepatic Injury in Subjects Who Consume Moderate Amounts of Alcohol While Being Administered Therapeutic Doses of Acetaminophen:
The study objective was to evaluate the safety of ten consecutive days of therapeutic acetaminophen dosing in moderate alcohol consumers. The main outcome was liver injury (measured by an increase in mean serum ALT or AST levels). Patients were randomly assigned to 10 days of acetaminophen or placebo. Blood tests were measured at baseline, day 4 and day 11 to look for injury. We hypothesized that there would be no difference in liver enzymes between the two groups.
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Phase 4
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Double
Moderate Alcohol Consumption (1-3 Drinks Per Day)
Drug: acetaminophen
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*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
September 2003
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Inclusion criteria Adult volunteers of age 21 years or older, regardless of ethnicity or gender, who provided written consent and met all three of the following criteria of a moderate alcohol consumer:

  1. Average baseline ethanol consumption of at least one alcoholic beverage per day before enrollment for the past two months. The estimate of ethanol intake was based on the average intake over seven days. For example, a person who ingested no alcohol on Sunday, Monday, Tuesday or Wednesday, two drinks on Thursday and four drinks on Friday and Saturday would be calculated as 10 drinks/7days = 1.4 drinks/day. The average alcoholic beverage contains 15 grams of alcohol(9).
  2. Average baseline ethanol consumption of no more than three alcoholic beverages (> 45 grams of alcohol) per day, calculated as a weekly average over the preceding two months.
  3. At least one alcohol-containing drink within the last 48 hours

Exclusion Criteria

Subjects were excluded from the study at baseline if any of the following were evident at baseline:

  1. Serum acetaminophen level greater than 20 mcg/ml
  2. Serum AST or ALT levels greater than 50 IU/L
  3. If female, positive for b-HCG
  4. Clinically intoxicated, psychiatrically impaired or unable to give informed consent
  5. Known hypersensitivity to acetaminophen
  6. History of ingesting more than four grams of acetaminophen per day for any of the four days preceding study enrollment
  7. Alcoholic patients as defined by those who consume on average more than three alcoholic beverages daily
  8. Currently enrolled in another trial or had been enrolled in another trial in the preceding three months
Sexes Eligible for Study: All
21 Years and older   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
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COMIRB 02-999
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Denver Health and Hospital Authority
McNeil Consumer & Specialty Pharmaceuticals, a Division of McNeil-PPC, Inc.
Principal Investigator: Kennon Heard, MD Rocky Mountain Poison Center
Denver Health and Hospital Authority
November 2006

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP