Review: could Fish Oil cause Diarrhea?


Diarrhea is found among people who take Fish Oil, especially for people who are female, 60+ old , have been taking the drug for 2 - 5 years, also take medication Aspirin, and have Hypertension . We study 27,760 people who have side effects while taking Fish oil from FDA and social media. Among them, 1,403 have Diarrhea. Find out below who they are, when they have Diarrhea and more.

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Fish Oil

Fish oil has active ingredients of fish oil. It is often used in supplementation therapy. (latest outcomes from Fish oil 27,555 users)


Diarrhea has been reported by people with weight decreased, breathing difficulty, fever, drug ineffective, abdominal pain (latest reports from 175,062 Diarrhea patients).

On Aug, 24, 2016

27,760 people reported to have side effects when taking Fish Oil.
Among them, 1,403 people (5.05%) have Diarrhea

Number of reports submitted per year:

Could Fish oil cause Diarrhea?

Time on Fish Oil when people have Diarrhea *:

  • < 1 month: 14.29 %
  • 1 - 6 months: 9.52 %
  • 6 - 12 months: 19.05 %
  • 1 - 2 years: 9.52 %
  • 2 - 5 years: 33.33 %
  • 5 - 10 years: 9.52 %
  • 10+ years: 4.76 %

Gender of people who have Diarrhea when taking Fish Oil *:

  • female: 64.09 %
  • male: 35.91 %

Age of people who have Diarrhea when taking Fish Oil *:

  • 0-1: 0.0 %
  • 2-9: 0.17 %
  • 10-19: 0.77 %
  • 20-29: 2.13 %
  • 30-39: 4.35 %
  • 40-49: 9.89 %
  • 50-59: 23.79 %
  • 60+: 58.91 %

Severity if Diarrhea when taking Fish Oil **:

  • least: 5.26 %
  • moderate: 63.16 %
  • severe: 31.58 %
  • most severe: 0.0 %

How people recovered from Diarrhea **:

  • while on drug: 0.0 %
  • after off the drug: 11.76 %
  • not yet: 88.24 %

Top conditions involved for these people *:

  • Hypertension (173 people)
  • Depression (124 people)
  • Blood Cholesterol Increased (124 people)
  • Pain (117 people)
  • Crohn's Disease (87 people)

Top co-used drugs for these people *:

  • Aspirin (415 people)
  • Lisinopril (201 people)
  • Folic Acid (191 people)
  • Prilosec (190 people)
  • Lipitor (190 people)

* Approximation only. Some reports may have incomplete information.

** Reports from social media are used.

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

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NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

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