Fish Oil, Natural

Also known as: fish oil, epa, dha, eicosapentaenoic acid, docosahexaenoic acid, krill oil

Essential polyunsaturated fatty acids (EPA and DHA) found primarily in fish oil. Cannot be synthesized efficiently by humans. Support cardiovascular, brain, and joint health.

250mg EPA+DHARDARecommended Dietary Allowance — the daily intake sufficient for 97-98% of healthy adults. Set by the National Institutes of Health.

3000mgUpper LimitTolerable Upper Intake Level (UL) — the maximum daily dose unlikely to cause adverse health effects. Exceeding this consistently may increase toxicity risk.

2ProductsNumber of supplements in our database that contain this ingredient.

3Health ClaimsNumber of researched health benefits associated with this ingredient, rated by evidence strength (strong/moderate/weak).

3Side EffectsNumber of documented side effects from clinical literature and adverse event reports.

Health Claims & Evidence

strongSupports heart health

May support cardiovascular health by influencing triglyceride levels. Effect is dose-dependent (typically studied at 1-4g EPA+DHA/day).

32 studies on PubMed

Related studies:Automatically retrieved from PubMed based on keyword matching. Some may not directly address the specific claim above.Effect of the Mediterranean diet in cardiovascular prevention.Rev Esp Cardiol (Engl Ed) (2024) · PMID 38336153 The role of the Mediterranean diet in reducing the risk of cognitive impairement, dementia, and Alzheimer's disease: a meta-analysis.Geroscience (2025) · PMID 39797935 The efficacy of fish oil in preventing coronary heart disease: A systematic review and meta-analysis.Medicine (Baltimore) (2021) · PMID 34664872

strongAnti-inflammatory

EPA and DHA have anti-inflammatory properties through multiple pathways. Effects are dose-dependent, typically studied at 1-3g combined EPA+DHA/day.

149 studies on PubMed

Related studies:Automatically retrieved from PubMed based on keyword matching. Some may not directly address the specific claim above.Pro-resolving lipid mediators are leads for resolution physiology.Nature (2014) · PMID 24899309 Functional Foods and Lifestyle Approaches for Diabetes Prevention and Management.Nutrients (2017) · PMID 29194424 Regulation of macrophage polarization by targeted metabolic reprogramming for the treatment of lupus nephritis.Mol Med (2024) · PMID 38914953

moderateSupports brain health

DHA is a structural component of brain tissue. Supplementation may support cognitive health, primarily studied at 500-1000mg DHA/day in older adults.

0 studies on PubMed

Known Side Effects

fishy aftertaste
digestive discomfort
increased bleeding at very high doses

Drug Interactions

blood thinners (warfarin
aspirin)
blood pressure medications
cyclosporine

Always consult your healthcare provider before combining supplements with medications.

Products Containing Fish Oil, Natural (2)

Nature's BlendOmega 3-6-9

66 2

CATALOChildren's DHA Formula