Omega-3 Fatty Acids (Fish Oil)
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Also called: Extra Strength Omega-3 Fish Oil - 120 softgels, Super EPA Fish Oil Concentrate - 200 Softgels, Omega 3
By The Health Stacks Research TeamUpdated September 9, 2026
Omega-3 Fatty Acids (Fish Oil) is a peptide studied for its effects on the body.
ApprovedApproved by a regulator (e.g. FDA) for a specific medical use — the highest research-status tier. Verified confidence80–100 — backed by strong, well-corroborated sources (peer-reviewed research, clinical guidelines). Our highest confidence tier.
Benefits
What Omega-3 Fatty Acids (Fish Oil) Helps With
The benefits people report — backed by research.
Neuroprotection & cognitive (10)
Reduces risk of progression to psychotic disorder 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduces positive, negative, and general symptoms of psychosis 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Improves overall functioning in ultra-high risk youth 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Increases Neuro-biomarkers 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Produces sustained reductions in externalizing and internalizing behavior problems in children 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Relief of menstrual pain 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Superior efficacy of Vitamin E and Omega-3 combination for menstrual pain 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduces antisocial and aggressive behavior in caregivers of supplemented children 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Brain / cognitive 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Eye health 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →
Cardiovascular & vascular (10)
Improves Lipid Profile 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Cardioprotection 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Angiogenesis 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Blood pressure reduction 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Plaque stability improvement 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Blood clotting 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduced risk of Sudden Cardiac Death with regular seafood consumption 75/100Rated 75/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduced risk of Sudden Cardiac Death with light-to-moderate alcohol consumption 75/100Rated 75/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduced risk of Sudden Cardiac Death with regular nut consumption 75/100Rated 75/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Heart health 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →
Anti-inflammatory (8)
Reduces serum C-reactive protein concentrations 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduces Tumor necrosis factor alpha concentrations 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduces interleukin 6 concentrations 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduces Inflammatory Cytokines 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Anti-inflammatory 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduces inflammatory response and pain 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Could prevent relapse in chronic inflammatory disorders 70/100Rated 70/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Immune modulation 70/100Rated 70/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →
Musculoskeletal (5)
Equivalent effect to ibuprofen in reducing arthritic pain 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Potential benefits for cancer, inflammatory bowel disease, lupus, and rheumatoid arthritis 75/100Rated 75/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Anti-inflammatory 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Muscle recovery 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Reduced risk of rheumatoid arthritis 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →
Skin, hair & cosmetic (2)
Photoprotection against UVA-provocation of a papular response 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Increased minimal erythema dose of UVB irradiation 90/100Rated 90/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →
More reported benefits (7)
Protection against heart disease and possibly stroke 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Relief of dysmenorrhea symptoms in adolescents 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Enhances Antioxidant Status 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Recovery 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Increases survival and reduces disease severity in spontaneous autoantibody-mediated disease 80/100Rated 80/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →Safer alternative to NSAIDs for treatment of nonsurgical neck or back pain 80/100Rated 80/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →slow or prevent disease progression in IgA nephropathy 75/100Rated 75/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →
Free: The Peptide Stack Cheat-Sheet
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How People Use It
2 reported routines — each line links to the source it came from.
From published sources
Routines as reported in peer-reviewed papers, clinical guidance, or vetted media — each linked to the source it came from.
SubQ
- Several weeks of continuous supplementation necessary to exhibit results in chronic inflammatory disorders 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ source
Oral
- Double the standard dose (approx 1000 mg) 85/100Rated 85/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ source
mg vs mcg: one milligram (mg) equals 1,000 micrograms (mcg) — multiply by 1,000 going from mg to mcg, divide by 1,000 going from mcg to mg. Mixing the two up is a thousand-fold dosing error: 1 mg taken instead of 1 mcg is a 1,000× overdose; 1 mcg instead of 1 mg is a 1,000× underdose. Always double-check the unit label and the decimal place.
Honest expectations
What Omega-3 Fatty Acids (Fish Oil) doesn’t do
What the sourced research says it doesn’t do — as notable as what it does.
- Minimal improvement in muscle strength and no significant effect on muscle mass 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↵ source
Safety
Known Side Effects
Adverse effects reported in the research and by community use.
- Diminishing Long-term EfficacyMild 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ncbi.nlm.nih.gov
- No Significant Side EffectsUnknown 95/100Rated 95/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ncbi.nlm.nih.gov
- Loss of anti-inflammatory efficacy during long-term treatment ('fade away' effect)Mild 75/100Rated 75/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ ncbi.nlm.nih.gov
- Increased risk of atrial fibrillationModerateReported in 2 sources 75/100Rated 75/100Source typePeer-reviewed studyIndependent sources2Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ lpi.oregonstate.edu↗ nutraingredients-usa.com
- Cardiac arrhythmiasSevere 75/100Rated 75/100Source typePeer-reviewed studyIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ lpi.oregonstate.edu
- Fishy-tasting burpsMild 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ healthline.com
- Increased bleeding risk at higher dosesModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
- Blood Thinning InteractionModerate 72/100Rated 72/100Source typeEstablished referenceIndependent sources1Every claim links to the page it came from, and stronger sources rate higher. Full methodology →↗ verywellhealth.com
Reported in research and community sources — not exhaustive. Discontinue use and consult a healthcare professional if side effects occur.
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