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The Effect of Fish Oil in Major Depressive Disorder

The Effect of Fish Oil in Major Depressive Disorder: a Double-blind Placebo-controlled Monotherapy Trail and a RCT for Recurrence Prevention

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00816322
Enrollment
120
Registered
2009-01-01
Start date
2005-01-31
Completion date
2014-12-31
Last updated
2015-04-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Major Depressive Disorder

Brief summary

The whole study was divided into two major parts: (A) the 12-week, double-blind, randomized controlled, parallel omega-3 fatty acid monotherapy study in 60 patients with mild to moderate major depressive disorder. (B) The double-blind, randomized controlled, parallel omega-3 fatty acid add-on prevention study in 60 patients with major depressive disorder in recovery status. The goals of this study were to examine the therapeutic and recurrence prevention effects of omega-3 fatty acids on major depressive disorder.

Interventions

DIETARY_SUPPLEMENTOmega-3 fatty acids

EPA 2.1 g/d+DHA 1.1 g/d

DIETARY_SUPPLEMENTPlacebo

high oleic oil

Sponsors

National Science and Technology Council, Taiwan
Lead SponsorOTHER_GOV

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. DSM-IV criteria for major depressive disorder. 2. Age being age 18-65. 3. Capacity and willingness to give written informed consent.

Exclusion criteria

1. Any major medical illnesses. 2. A recent or past history of any Axis-I diagnoses besides major depressive disorder, including psychotic disorders; cognitively impaired mental disorders; impulse control disorders; substance use disorder or substance abuse (last 6 months prior to the studies); primary anxiety disorders, including post-traumatic stress disorder and panic disorder; and bipolar disorders; or Axis-II diagnoses, i.e. borderline and antisocial personality disorder.

Design outcomes

Primary

MeasureTime frame
HAMDW0 W2 W4 W8 W12

Secondary

MeasureTime frame
BDIW0 W2 W4 W8 W12
Adverse effectsW0 W2 W4 W8 W12
Recurrence rateM0 M1 M2 M3 M4 M6

Countries

Taiwan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026