Fish Oil / Omega-3 Calculator
Calculate optimal EPA and DHA omega-3 fatty acid dosing based on your health goals, conditions, and dietary intake.
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Why: This page explains what the Fish Oil / Omega-3 calculator does, what to enter, and how to read the results—without repeating the overview above.
How: Enter your values in the calculator fields below, keep units consistent, then run the calculation to see results and any step-by-step work shown on this page.
Run the calculator when you are ready.
❤️ Cardiovascular Protection
Middle-aged adult with elevated LDL and family history of heart disease
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📊 Severe Hypertriglyceridemia
Patient with very high triglycerides (>500) requiring therapeutic intervention
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🧠 Major Depression
Adult with moderate depression seeking adjunctive nutritional support
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🤰 Pregnancy DHA
Pregnant woman in second trimester needing DHA for fetal development
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🦴 Rheumatoid Arthritis
Patient with RA seeking anti-inflammatory omega-3 support
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▸Patient
▸Goals
▸Cardiovascular
▸Mental Health
▸Inflammatory
▸Special Populations
▸Diet
▸Supplement
▸Safety
Omega-3 Recommendation
Total Omega-3
450mg
EPA + DHA daily
EPA
225mg
Anti-inflammatory
DHA
225mg
Brain & eyes
Capsules/Day
2
$4.50/month
Cardiovascular Risk: Low CV Risk
Score: 0/15. Maintenance dosing appropriate.
EPA vs DHA Distribution
Dosing by Condition
Your Health Goals Analysis
| Goal | Recommended Dose | Priority | Evidence |
|---|---|---|---|
| general health | 500mg | maintenance | General population maintenance - WHO/AHA recommendations |
Expected Benefits Timeline
1-2 weeks
Initial incorporation into cell membranes begins
4-6 weeks
Anti-inflammatory effects may become noticeable
8-12 weeks
Triglyceride reduction (if applicable) measurable
12+ weeks
Full cardiovascular and cognitive benefits
⏰ Timing & Absorption
- Take with meals containing fat for optimal absorption (40-60% better)
- Evening dosing may reduce "fish burps" and GI side effects
- Consistency is more important than specific timing
- If taking multiple doses, space evenly throughout the day
✅ Quality Considerations
- Look for third-party testing (IFOS, USP, NSF)
- Check for low oxidation markers (TOTOX <26)
- Triglyceride form may have better absorption than ethyl esters
- Store in cool, dark place; refrigerate after opening
- Discard if fishy smell is strong (indicates oxidation)
🐟 Top Dietary Sources of EPA & DHA
| Food Source | EPA (mg/3oz) | DHA (mg/3oz) | Notes |
|---|---|---|---|
| Atlantic Salmon (farmed) | 590 | 1240 | Excellent source |
| Atlantic Mackerel | 430 | 590 | High omega-3, low mercury |
| Sardines (canned) | 450 | 740 | Affordable, sustainable |
| Herring | 770 | 940 | Very high omega-3 |
| Rainbow Trout | 220 | 440 | Good freshwater option |
| Anchovies | 450 | 770 | Low in contaminants |
| Oysters | 230 | 320 | Also high in zinc |
| Canned Tuna (light) | 40 | 190 | Lower omega-3, watch mercury |
* Values are approximate and vary by source. Aim for 2+ fatty fish servings per week.
🌱 Plant-Based Omega-3 Sources (ALA)
- Flaxseed/Flaxseed oil (highest ALA)
- Chia seeds (1.6g ALA/oz)
- Walnuts (2.5g ALA/oz)
- Hemp seeds (0.9g ALA/oz)
- Canola oil (moderate ALA)
- Soybeans and soy products
- Brussels sprouts
- Algal oil (direct EPA/DHA, vegan)
💊 Supplement Form Comparison
| Form | Bioavailability | Cost | Pros/Cons |
|---|---|---|---|
| Triglyceride (TG) | High (natural form) | $$$ | Best absorbed, natural fish oil form |
| Ethyl Ester (EE) | Lower (50-70%) | $ | Most common, more concentrated |
| Phospholipid (Krill) | Very High | $$$$ | Contains astaxanthin, lower doses needed |
| Free Fatty Acid (FFA) | Highest | $$$ | Prescription forms (Epanova) |
| Re-esterified TG | High | $$ | Concentrated but natural form |
⚠️ Drug Interactions
Anticoagulants & Antiplatelets
- Warfarin: May increase INR - monitor more frequently
- Aspirin: Additive antiplatelet effect - increased bleeding risk
- Clopidogrel (Plavix): Additive antiplatelet effect
- DOACs (apixaban, rivaroxaban): Theoretical increased bleeding risk
- Heparin/LMWH: May potentiate anticoagulant effect
Blood Pressure Medications
Omega-3s have mild blood pressure lowering effects (2-4 mmHg). Generally beneficial when combined with antihypertensives, but monitor for hypotension if taking multiple BP medications.
Statins & Fibrates
Statins: Safe combination, often used together for cardiovascular protection (REDUCE-IT trial with Vascepa + statin).
Fibrates: Both lower triglycerides - complementary effect, generally safe but monitor lipids.
Safety Notice
High doses of omega-3s (>3g/day) should be taken under medical supervision due to potential bleeding risk. Fish oil may interact with blood thinners, aspirin, and other medications. Stop fish oil 1-2 weeks before surgery. The FDA has approved prescription omega-3s (Lovaza, Vascepa, Epanova) for triglycerides >500 mg/dL. This calculator provides general guidance and does not replace medical advice from a qualified healthcare provider.
Omega-3 Recommendation
EPA: 225mg + DHA: 225mg. Take 2 capsule(s) daily. Low CV Risk.
For informational purposes only — not medical advice. Consult a healthcare professional before acting on results.
Fish Oil & Omega-3 Supplementation Guide
EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) are long-chain omega-3 polyunsaturated fatty acids primarily found in fatty fish and marine sources. These essential nutrients play crucial roles in cardiovascular health, brain function, inflammation regulation, and cellular membrane integrity. Unlike short-chain ALA found in plants, EPA and DHA are directly usable by the body.
Key Takeaways
General health requires 250-500mg EPA+DHA daily; therapeutic doses for conditions like high triglycerides reach 2,000-4,000mg.
EPA dominates for anti-inflammatory and mood benefits; DHA dominates for brain, eye, and fetal development.
Absorption improves 40-60% when taken with a fat-containing meal. Triglyceride form absorbs better than ethyl ester.
Stop fish oil 7-14 days before surgery and inform your doctor if taking blood thinners or daily aspirin.
Did You Know?
The human brain is nearly 60% fat, and DHA makes up 15-20% of the cerebral cortex fatty acids.
The REDUCE-IT trial showed icosapent ethyl (pure EPA) reduced cardiovascular events by 25% in statin-treated patients.
Krill oil contains phospholipid-bound omega-3s with potentially superior bioavailability compared to standard fish oil.
Greenland Inuit populations consuming high omega-3 diets historically had cardiovascular disease rates 80% lower than Western populations.
The body converts only 5-15% of plant-based ALA to EPA, and less than 5% to DHA, making marine sources far more efficient.
Prescription omega-3 products (Vascepa, Lovaza) are FDA-approved for triglycerides above 500 mg/dL at doses of 2-4g/day.
How Does This Calculator Work?
This calculator evaluates your health profile across multiple dimensions to determine an optimal EPA+DHA dose:
- Primary Goal Matching — Selects evidence-based dosing from peer-reviewed guidelines for your stated health goal.
- Secondary Condition Stacking — Identifies co-existing conditions and selects the highest recommended dose across all relevant conditions.
- Dietary Adjustment — Reduces supplemental dose based on estimated omega-3 intake from fish consumption.
- EPA:DHA Ratio Optimization — Splits the total dose into EPA and DHA components based on condition-specific optimal ratios.
- Safety Screening — Checks bleeding risk, drug interactions, pregnancy contraindications, and allergy alerts.
- Supplement Calculation — Converts the target dose into practical servings and capsules based on your chosen product.
Expert Tips
Maximize Absorption
Always take fish oil with a meal containing at least 10-15g of fat. Avocado, olive oil, nuts, or eggs paired with your supplement can boost absorption by 40-60%.
Quality Checks
Look for IFOS, USP, or NSF certification. Check the TOTOX value (should be under 26). Store in a cool, dark place and refrigerate after opening. Discard if smell is strong.
Timing Strategy
Evening dosing may reduce "fish burps." If taking 3+ capsules daily, split into morning and evening doses for better tolerance and sustained blood levels.
Vegan Alternatives
Algal oil provides direct EPA and DHA without fish. It's sustainably sourced and free of ocean contaminants. Ideal for vegans, vegetarians, or those with fish allergies.
Supplement Form Comparison
| Form | Bioavailability | Cost | Best For |
|---|---|---|---|
| Triglyceride (TG) | High (natural form) | $$$ | Best absorbed, natural fish oil form |
| Ethyl Ester (EE) | Lower (50-70%) | $ | Most common, concentrated |
| Phospholipid (Krill) | Very High | $$$$ | Contains astaxanthin, lower doses needed |
| Algal Oil | High | $$ | Vegan, sustainable, contaminant-free |
| Re-esterified TG | High | $$ | Concentrated in natural form |
Frequently Asked Questions
How much fish oil should I take daily?▼
What is the difference between EPA and DHA?▼
When is the best time to take fish oil?▼
Can fish oil lower triglycerides?▼
Is fish oil safe with blood thinners?▼
Should pregnant women take fish oil?▼
Key Statistics
| Condition | Dose (mg/day) | Optimal Ratio | Evidence |
|---|---|---|---|
| general health | 250-1000 | 1:1 | General population maintenance - WHO/AHA recommend... |
| heart health | 1000-4000 | 1.5:1 EPA | AHA Guidelines for CVD risk reduction... |
| post heart attack | 1000-2000 | 1:1 | GISSI-Prevenzione trial - secondary prevention... |
| high triglycerides | 2000-4000 | 2:1 EPA | FDA-approved prescription omega-3s for TG >500... |
| borderline triglycerides | 1000-3000 | 1.5:1 EPA | Moderate hypertriglyceridemia management... |
| depression | 1000-3000 | 2:1 EPA | EPA dominant formulas more effective for depressio... |
| anxiety | 1000-2500 | 2:1 EPA | Meta-analyses supporting anxiolytic effects... |
| bipolar disorder | 1000-3000 | 2:1 EPA | Adjunctive therapy for depressive episodes... |
| adhd | 500-2000 | 2:1 EPA | Pediatric and adult ADHD studies... |
| inflammation | 2000-4000 | 2:1 EPA | Anti-inflammatory prostaglandin effects... |
| rheumatoid arthritis | 2700-4000 | 2:1 EPA | ACR supportive evidence - may reduce NSAID use... |
| osteoarthritis | 1000-3000 | 1.5:1 EPA | Moderate evidence for joint health... |
Official Data Sources
- ●American Heart Association (AHA) — Omega-3 Fatty Acids and Heart Disease Guidelines
- ●World Health Organization (WHO) — Dietary Fat and Fatty Acid Recommendations
- ●FDA — Approved Prescription Omega-3 Products (Vascepa, Lovaza, Epanova)
- ●REDUCE-IT Trial (NEJM 2019) — Cardiovascular Risk Reduction with Icosapent Ethyl
- ●GISSI-Prevenzione Trial — Secondary Prevention with Omega-3 Fatty Acids
- ●International Society for the Study of Fatty Acids and Lipids (ISSFAL) — Pregnancy Recommendations
Medical Disclaimer
This calculator provides general educational guidance based on published clinical evidence and is not a substitute for professional medical advice, diagnosis, or treatment. High doses of omega-3s (>3g/day) should be taken under medical supervision due to potential bleeding risk. Fish oil may interact with blood thinners, aspirin, and other medications. Always consult your healthcare provider before starting or changing any supplement regimen.
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