General Dosage
1-3g combined EPA+DHA daily with a fat-containing meal
Maximum dose: 5g combined EPA+DHA/day (FDA considers up to 5g/day safe from supplements; prescription icosapent ethyl uses 4g/day under medical supervision)
Fish Oil Dosage Guide
Evidence:Strong
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Dosage Recommendations
General recommendation: 1-3g combined EPA+DHA daily with a fat-containing meal
Timing: With the largest fat-containing meal of the day for optimal absorption; divide doses above 2g into two daily servings for GI tolerance • Take with food for best absorption.
Dosage by Condition
General cardiovascular support
1g combined EPA+DHA dailyStrong
High triglycerides
2-4g combined EPA+DHA dailyStrong
Depression (mild-to-moderate)
1-2g EPA daily (EPA-dominant formulation, ≥60% EPA)Moderate
Joint pain / inflammatory arthritis
2.5-3g combined EPA+DHA daily for 12+ weeksModerate
Cognitive support / brain health
1-2g combined EPA+DHA daily (DHA-emphasis for structural brain support)Moderate
| Condition | Recommended Dose | Evidence |
|---|---|---|
| General cardiovascular support | 1g combined EPA+DHA daily | Strong |
| High triglycerides | 2-4g combined EPA+DHA daily | Strong |
| Depression (mild-to-moderate) | 1-2g EPA daily (EPA-dominant formulation, ≥60% EPA) | Moderate |
| Joint pain / inflammatory arthritis | 2.5-3g combined EPA+DHA daily for 12+ weeks | Moderate |
| Cognitive support / brain health | 1-2g combined EPA+DHA daily (DHA-emphasis for structural brain support) | Moderate |
Upper limit: 5g combined EPA+DHA/day (FDA considers up to 5g/day safe from supplements; prescription icosapent ethyl uses 4g/day under medical supervision)
Timing & Absorption
With the largest fat-containing meal of the day for optimal absorption; divide doses above 2g into two daily servings for GI tolerance
Best taken with food for optimal absorption.
Find a Fish Oil with the right dose
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References
- RCTBhatt DL, Steg PG, Miller M, Brinton EA, Jacobson TA, Ketchum SB, Doyle RT Jr, Juliano RA, Jiao L, Granowitz C, Tardif JC, Ballantyne CM (2019). Cardiovascular risk reduction with icosapent ethyl for hypertriglyceridemia. New England Journal of Medicine. DOI PubMed
- Meta-analysisAbdelhamid AS, Brown TJ, Brainard JS, Biswas P, Thorpe GC, Moore HJ, Deane KH, Summerbell CD, Worthington HV, Song F, Hooper L (2020). Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease. Cochrane Database of Systematic Reviews. DOI PubMed
- Meta-analysisLiao Y, Xie B, Zhang H, He Q, Guo L, Subramanieapillai M, Fan B, Lu C, McIntyre RS (2019). Efficacy of omega-3 PUFAs in depression: a meta-analysis. Translational Psychiatry. DOI PubMed
- Meta-analysisMocking RJ, Harmsen I, Assies J, Koeter MW, Ruhe HG, Schene AH (2016). Meta-analysis and meta-regression of omega-3 polyunsaturated fatty acid supplementation for major depressive disorder. Translational Psychiatry. DOI PubMed
- Silveira JM, Ribeiro TS, Guilarducci MJ, Reis MG, et al. (2024). Effect of fish-oil supplementation on the glycemic and lipidemic profiles of pregnant women: a systematic review and meta-analysis.. Nutrition reviews. DOI PubMed
- Khoshnoudi-Nia S, Forghani Z, Jafari SM (2022). A systematic review and meta-analysis of fish oil encapsulation within different micro/nanocarriers.. Critical reviews in food science and nutrition. DOI PubMed
- Zhou J, Tang G, Tang S, Yuan W (2022). The effect of fish oil on inflammation markers in adult patients undergoing hemodialysis: A meta-analysis.. Seminars in dialysis. DOI PubMed