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Omega-3 Supplements
Compare US fish, krill and algae oils by daily EPA + DHA, serving, price and testing status. Fish-oil weight is not the active dose, and prescription triglyceride treatment is a separate decision.
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Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Recognised certification
Manufacturer statement
Nutrasource registry page for NOW Ultra 97% Omega-3 Fish Oil shows IFOS Testing Results and a product page for NOW Foods under the NOW brand registry.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Recognised certification
Manufacturer statement
Nutrasource registry page for NOW Ultra 97% Omega-3 Fish Oil shows IFOS Testing Results and a product page for NOW Foods under the NOW brand registry.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Testing evidence
Evidence status
Testing claimed
Manufacturer statement
Deal Supplement’s own product page says: “Quality Ensured – Made with non-GMO ingredients in a cGMP compliant facility. Contains fish (anchovies, sardines), purified to remove mercury, and formulated without gluten, soy, dairy, or tree nuts. Third-party lab tested for safety, purity, and potency.” The FAQ page also says: “How does Deal Supplement ensure product safety? We have stringent quality control for our products, and we hire 3rd party lab testers to ensure the quality of our raw materials.”
Compare EPA + DHA, not total oil. No US RDA or formal UL is established for EPA+DHA. AHA dietary guidance supplies a roughly 250 mg/day benchmark, not a supplement prescription. Our comparison band runs from 250 to below 4,000 mg; 4 g/day is prescription-treatment scale with atrial-fibrillation context. FDA assessed supplemental intakes up to 5 g/day, not a recommended target or guarantee of safety. Read the dose guide ↓
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Viva Naturals product page says “Third Party Certified” and “IFOS Certified”; Nutrasource’s registry page for “Triple Strength Omega-3 Fish Oil” confirms IFOS testing results for specific lots, and the IFOS report for batch SG26050703 shows pass results.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Sports Research product page says "Third Party Tested Certified" and "IFOS 5-Star Certified"; Nutrasource registry page for "Omega-3 Fish Oil Triple Strength 1250mg MSC-C-55162" confirms this Sports Research fish oil product is in the IFOS program and shows batch/lot entries with "IFOS™ Testing Results."
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Nutrasource registry page for "Pure & Essential Vegan Omega-3 & Astaxanthin" states: "IAOS™ Testing Results" and shows the product has passed batch testing; the batch report also lists potency, persistent organic pollutants, stability, and heavy metals results for batch 4019.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
NatureWise product page states: "Contents certified by NSF" and "This supplement is NSF-certified, which means its contents are thoroughly tested for accuracy and purity, and has been confirmed for no harmful levels of contaminants." NSF's own listings page confirms "Naturewise Omega-3 1000mg Plus Vitamin E Softgels" under NSF/ANSI Standard 173 Dietary Supplements.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
NatureWise product pages state "Third Party Tested" and "rigorous heavy metal testing" / "independent third party audits to ensure quality," but I did not find an independently verifiable COA or a certifying-body registry entry for this specific product.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Deal Supplement’s own product page says: “Quality Ensured – Made with non-GMO ingredients in a cGMP compliant facility. Contains fish (anchovies, sardines), purified to remove mercury, and formulated without gluten, soy, dairy, or tree nuts. Third-party lab tested for safety, purity, and potency.” The FAQ page also says: “How does Deal Supplement ensure product safety? We have stringent quality control for our products, and we hire 3rd party lab testers to ensure the quality of our raw materials.”
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
NOW Foods has a public "Certificate of Analysis" portal and a "Third Party Testing | Comprehensive Testing" page, but I could not access a product-specific COA or registry entry for the exact Amazon product. The only independently readable registry result found was for a different product: "NOW Ultra 97% Omega-3 Fish Oil" on Nutrasource, not the exact "Ultra Omega-3 500 EPA / 250 DHA" listing.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Nutricost product page says: "3rd Party Tested" and "Nutricost products are tested by an independent, accredited lab to help verify that what’s on the label is what’s in the bottle."
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
tnvitamins About Us page: "Proudly Packaged & Lab-Tested in the USA" and product page: "Our Fish Oil is always purified to remove mercury, and ensure premium quality."
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Amandean’s omega-3 product guide says the product is “cGMP Certified” and “Non-GMO,” but I did not find an independently verifiable third-party registry or product-specific COA confirming this exact product. The guide also says the product is made from algae grown in the USA and is “naturally free from heavy metals, PCBs and dioxins,” which is a marketing/purity statement rather than a verifiable certification result.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Arazo Nutrition’s product/quality pages state that “Each product is third party tested through many rounds of quality tests and assays throughout the manufacturing process to verify purity, quality and full potency.”
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
USP Verified Products page lists “Nature Made Fish Oil 1200 Mg Softgels” under Fish Oil / Nature Made, and the page states these products have received the USP Verified Mark.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Viva Naturals product page says “Third Party Certified” and “IFOS Certified”; Nutrasource’s registry page for “Triple Strength Omega-3 Fish Oil” confirms IFOS testing results for specific lots, and the IFOS report for batch SG26050703 shows pass results.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Sports Research product page says "Third Party Tested Certified" and "IFOS 5-Star Certified"; Nutrasource registry page for "Omega-3 Fish Oil Triple Strength 1250mg MSC-C-55162" confirms this Sports Research fish oil product is in the IFOS program and shows batch/lot entries with "IFOS™ Testing Results."
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Nutrasource registry page for "Pure & Essential Vegan Omega-3 & Astaxanthin" states: "IAOS™ Testing Results" and shows the product has passed batch testing; the batch report also lists potency, persistent organic pollutants, stability, and heavy metals results for batch 4019.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
NatureWise product page states: "Contents certified by NSF" and "This supplement is NSF-certified, which means its contents are thoroughly tested for accuracy and purity, and has been confirmed for no harmful levels of contaminants." NSF's own listings page confirms "Naturewise Omega-3 1000mg Plus Vitamin E Softgels" under NSF/ANSI Standard 173 Dietary Supplements.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
NatureWise product pages state "Third Party Tested" and "rigorous heavy metal testing" / "independent third party audits to ensure quality," but I did not find an independently verifiable COA or a certifying-body registry entry for this specific product.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Deal Supplement’s own product page says: “Quality Ensured – Made with non-GMO ingredients in a cGMP compliant facility. Contains fish (anchovies, sardines), purified to remove mercury, and formulated without gluten, soy, dairy, or tree nuts. Third-party lab tested for safety, purity, and potency.” The FAQ page also says: “How does Deal Supplement ensure product safety? We have stringent quality control for our products, and we hire 3rd party lab testers to ensure the quality of our raw materials.”
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
NOW Foods has a public "Certificate of Analysis" portal and a "Third Party Testing | Comprehensive Testing" page, but I could not access a product-specific COA or registry entry for the exact Amazon product. The only independently readable registry result found was for a different product: "NOW Ultra 97% Omega-3 Fish Oil" on Nutrasource, not the exact "Ultra Omega-3 500 EPA / 250 DHA" listing.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Nutricost product page says: "3rd Party Tested" and "Nutricost products are tested by an independent, accredited lab to help verify that what’s on the label is what’s in the bottle."
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
tnvitamins About Us page: "Proudly Packaged & Lab-Tested in the USA" and product page: "Our Fish Oil is always purified to remove mercury, and ensure premium quality."
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Amandean’s omega-3 product guide says the product is “cGMP Certified” and “Non-GMO,” but I did not find an independently verifiable third-party registry or product-specific COA confirming this exact product. The guide also says the product is made from algae grown in the USA and is “naturally free from heavy metals, PCBs and dioxins,” which is a marketing/purity statement rather than a verifiable certification result.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
Arazo Nutrition’s product/quality pages state that “Each product is third party tested through many rounds of quality tests and assays throughout the manufacturing process to verify purity, quality and full potency.”
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
USP Verified Products page lists “Nature Made Fish Oil 1200 Mg Softgels” under Fish Oil / Nature Made, and the page states these products have received the USP Verified Mark.
Displayed points and weights are rounded; the total uses unrounded weights. Pending dimensions are excluded. Provisional scores may change after review.
One-time purchase prices; delivery and conditional discounts excluded. Daily cost uses the recorded label serving. Comparison amounts are not personal dose recommendations. Unknown Prime eligibility is not treated as confirmed.
Omega-3 sources & forms explained
Source, chemical form and amount answer different questions. Read the disclosed EPA and DHA amounts before comparing marketing terms.
Fish oil
Source
Compare
EPA + DHA per daily serving
Do not substitute
Total oil weight
A label stating 1,000 mg fish oil does not necessarily supply 1,000 mg EPA + DHA.
Algae oil
Fish-free source
Check
EPA and DHA separately
Vegan suitability
Read oil and capsule ingredients
Algae products can contain different proportions. A fish-free source does not establish an equivalent dose to another product.
Krill oil
Crustacean source
Compare
Declared EPA + DHA
Also check
Allergens and additional ingredients
A large krill-oil headline is not the EPA + DHA amount. Astaxanthin does not replace either fatty acid.
TG, rTG and EE
Oil forms
TG / rTG
Triglyceride / re-esterified triglyceride
EE
Ethyl ester
These describe chemical forms. The current source label alone does not establish which form is present or prove better clinical outcomes.
Cod liver oil
Additional nutrients
Check
Vitamin A and vitamin D
Compare
All active ingredients
Do not treat it as interchangeable with plain fish oil. Include its other vitamins when checking combined intake.
Fish oil dosage: EPA + DHA and US guidance
NIH ODS lists adult Adequate Intakes for ALA: 1.6 g/day for men and 1.1 g/day for women. These are not EPA + DHA targets; no US RDA is established for EPA + DHA.
Reference
What it means
AHA dietary guidance
Two fish servings weekly; the advisory discusses an average of roughly 250 mg/day EPA + DHA as dietary context.
Our dose badges
250 mg is a dietary benchmark. The 1,000 mg boundary is an editorial comparison cutoff, not an AHA upper limit.
Prescription use
A different formulation, indication and monitoring plan; do not recreate it by adding retail capsules.
The AHA seafood advisory supports a food pattern, not a universal supplement prescription. A badge compares one product serving; it cannot assess your whole diet.
Omega-3 benefits: food, supplements and medicines
NCCIH distinguishes evidence for seafood from evidence for supplements. Cardiovascular results depend on the population, formulation and outcome. A nutrient’s role in the body does not establish that extra capsules improve every outcome advertised.
“For women” or “for men”
Compare the actual formulation and reason for use. A demographic phrase on the bottle does not establish a special EPA:DHA ratio or a proven benefit.
Triglyceride: two meanings
Blood triglycerides are a laboratory measurement. Triglyceride-form oil describes molecular structure. One label term does not establish that a product treats the other.
Omega-3 evidence by goal
Evidence by goal
Goal
Evidence strength
What was assessed
Typical study context
Main limitation
High blood triglycerides
Prescription evidence
Specific omega-3 medicines
Clinician-directed treatment
Retail supplements are not substitutes
General heart health
Context-dependent results
Seafood and supplements differ
Diet and baseline risk matter
Do not promise heart-attack prevention
Depression or ADHD
Uncertain or insufficient benefit
Different study formulations
Not a replacement for care
No treatment claim for these products
Vegan EPA + DHA intake
Source comparison
Algal oil
Check each fatty-acid amount
Source alone does not establish outcomes
Read the full evidence-by-goal detail
The AHA prescription advisory describes 4 g/day prescription omega-3 for high triglycerides, with reductions of about 20–30%. It explicitly separates supplements from approved treatment. Lowering triglycerides and preventing cardiovascular events are also different outcomes.
NCCIH finds uncertainty around depression and insufficient support for improving ADHD symptoms. These products should not replace prescribed treatment.
When to take fish oil
Build a practical routine
Follow the product instructions, including whether to take it with a meal. Check the serving size before counting capsules. This comparison does not establish a best clock time.
Burpless and enteric-coated claims
These are formulation claims, not proof of purity or a higher active dose. Check whether tolerability, capsule size and daily cost suit your routine.
Fish oil side effects and higher doses
Who should be cautious?If any of the following apply to you, speak to a healthcare professional before taking Omega-3 - see the full detail below for why.
Atrial fibrillation or another heart-rhythm condition
Anticoagulant treatment, bleeding concerns or planned surgery
Fish or shellfish allergy; pregnancy-specific supplement choices
NIH ODS consumer guidance lists unpleasant taste, heartburn, nausea and diarrhea among possible effects. The professional fact sheet reports that trials using 4 g/day over several years found a small increase in atrial fibrillation risk in people with cardiovascular disease or high risk.
Discuss high-dose use with your clinician, particularly with an existing rhythm disorder. Check fish and shellfish allergens; do not infer suitability from a refined-oil claim.
Omega-3 interactions and combinations
NIH ODS advises checking medicine interactions, including anticoagulants such as warfarin. Tell your pharmacist about the actual EPA + DHA amount and other supplements you take.
Check added vitamins in cod liver oil or combination products. A sustainability badge, added antioxidant or “burpless” claim does not resolve a medicine interaction.
Food choices, vegan options and pregnancy
People avoiding fish can compare the declared EPA and DHA in algae products. NIH ODS explains that conversion of plant ALA to EPA and DHA is limited; flaxseed oil is not an equivalent milligram-for-milligram replacement.
For pregnancy and breastfeeding, FDA/EPA advice recommends 8–12 ounces weekly of lower-mercury seafood. Fish also supplies other nutrients. Discuss an appropriate alternative if you avoid seafood; this adult comparison is not a prenatal treatment plan.
Oil quality and testing claims
Testing review pending means the detailed product evidence review is unfinished. While testing is pending, it is excluded and the score is provisional. It does not mean a product failed testing or that no evidence exists.
FDA does not approve supplements for safety and effectiveness before sale. Check the exact product and lot behind a quality claim.
A useful report identifies the product, batch, laboratory, date, methods and results. Ingredient identity, measured content and contaminant testing answer different questions. A raw-material certificate is not automatically evidence for the bottle you buy. See how we verify testing.
For oils, ask whether the report covers EPA/DHA content, oxidation and contaminants for the finished batch. A sustainability claim answers a different question. Missing public documents are not the same as failed testing.
Triglycerides tests and the omega-3 index
A triglycerides test measures a blood fat, usually within a lipid panel; US reports commonly use mg/dL. Follow the laboratory’s preparation instructions. Your clinician interprets it alongside cholesterol and overall cardiovascular risk.
An omega-3 index is different
NIH ODS describes the index as EPA + DHA in red-cell membranes, expressed as a percentage. Plasma measurements can reflect recent meals. Normal reference ranges are not universally established.
Avoid chasing a commercial target
Use the supplied method and reference interval. This comparison does not diagnose deficiency, prescribe a dose from a percentage or recommend routine repeat index testing.
Testing evidence in this comparison
A testing claim is not the same as a verified report. No public evidence located does not mean a product has not been tested.
Testing review pending0
Recognised certification4
Verified independent evidence0
Manufacturer COA0
Testing claimed10
No public evidence located1
What does omega-3 cost?
Current US comparison set, based on the daily serving shown on each label.
$0.07Lowest daily cost
$0.23Median daily cost
$1.31Highest daily cost
Your questions, answered
Is 1,000 mg fish oil the same as 1,000 mg omega-3?
No. Add the declared EPA and DHA for the full serving; see fish-oil labels.
