Fish Oil and Alpha Lipoic Acid in Treating Alzheimer's Disease

This study has been completed.
Information provided by:
Oregon Health and Science University Identifier:
First received: August 25, 2004
Last updated: February 3, 2010
Last verified: January 2010

The purpose of this study is to determine the effect of fish oil and the antioxidant alpha lipoic acid on factors in the blood that are associated with the progression of Alzheimer's Disease (AD).

Condition Intervention Phase
Alzheimer's Disease
Oxidative Stress
Dietary Supplement: Fish Oil
Dietary Supplement: Fish Oil and Lipoic acid
Other: Placebo
Phase 1
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double-Blind
Primary Purpose: Treatment
Official Title: Fish Oil and Alpha Lipoic Acid in Mild Alzheimer's Disease

Resource links provided by NLM:

Further study details as provided by Oregon Health and Science University:

Primary Outcome Measures:
  • F2-isoprostane Level Urine F2-Isoprostanes Were Collected. [ Time Frame: 12 months ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Activities of Daily Living [ Time Frame: baseline, 6 months, 12 months ] [ Designated as safety issue: No ]

Enrollment: 39
Study Start Date: April 2004
Estimated Study Completion Date: February 2007
Arms Assigned Interventions
Placebo Comparator: Placebo Other: Placebo
Soybean oil 3 grams a day and placebo lipoic acid 600 milligrams a day taken for 12 months.
Experimental: Fish Oil
Fish oil concentrate
Dietary Supplement: Fish Oil
Fish oil concentrate (daily dose 3 grams containing 675 milligrams docosahexanoic acid and 975 milligrams eicosapentanoic acid) taken for 12 months.
Other Name: Fish oil concentrate, omega-3 fatty acids
Experimental: Fish Oil and Lipoic Acid Dietary Supplement: Fish Oil and Lipoic acid
Fish oil concentrate(daily dose 3 grams containing 675 milligrams docosahexanoic acid and 975 milligrams eicosapentanoic acid) plus lipoic acid (daily dose 600 milligrams)taken for 12 months
Other Name: thiotic acid, alpha lipoic acid

Detailed Description:

Alzheimer's disease (AD) is a serious condition associated with increased inflammation, cholesterol, and oxidative stress (a condition involving an excess of free radicals and a decrease in antioxidant levels). Fish oil and alpha lipoic acid, which have few side effects, may help relieve these problems; therefore, these supplements may slow the progression of AD, particularly when given in combination. This study will evaluate the effect of fish oil and alpha lipoic acid on inflammation, lipid levels, and oxidative stress.

Participants in this study will be randomly assigned to receive fish oil alone, fish oil and alpha lipoic acid, or placebo for 1 year. AD rating scales as well as urine and blood tests will be used to assess participants. Participants will have monthly clinic visits during the study to monitor adverse events and to undergo various laboratory tests.


Ages Eligible for Study:   55 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Diagnosis of probable Alzheimer's Disease or mild cognitive impairment
  • Mini Mental State Examination (MMSE) score between 18 and 26
  • Clinical Dementia Rating (CDR) of 0.5 or 1.0
  • Fluent in English

Exclusion Criteria:

  • Use of lipid lowering medications
  • Consumption of fish of more than twice a week
  • Use of omega and alpha lipoic acid supplements
  • Use of systemic corticosteroids, neuroleptics, anti-Parkinsonian agents, or narcotic analgesics
  • Depression
  • Any other serious health conditions that may interfere with the study
  • Enrollment in another clinical trial
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00090402

United States, Oregon
Oregon Health and Science University
Portland, Oregon, United States, 97239
Sponsors and Collaborators
Oregon Health and Science University
Principal Investigator: Lynne H. Shinto, ND Oregon Health and Science University
  More Information

Publications: Identifier: NCT00090402     History of Changes
Other Study ID Numbers: IA0062, 5R21AG023805, 5R21AG023805-02
Study First Received: August 25, 2004
Results First Received: December 2, 2009
Last Updated: February 3, 2010
Health Authority: United States: Federal Government

Keywords provided by Oregon Health and Science University:
Fish Oils
Thioctic Acid
Dietary Supplements

Additional relevant MeSH terms:
Alzheimer Disease
Brain Diseases
Central Nervous System Diseases
Delirium, Dementia, Amnestic, Cognitive Disorders
Lipid Metabolism Disorders
Mental Disorders
Metabolic Diseases
Nervous System Diseases
Neurodegenerative Diseases
Pathologic Processes
Thioctic Acid
Growth Substances
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Physiological Effects of Drugs
Protective Agents
Vitamin B Complex
Vitamins processed this record on September 01, 2015