Omega-3 Fish Oil Dosage Guide: How Much EPA and DHA?
Fish oil is beneficial—but how much do you actually need?
For all supplement guides, see: Best Greens Powder.
The Important Numbers
What matters is EPA + DHA content, not total fish oil.
| Goal | EPA + DHA/day |
|---|---|
| General health | 500-1000mg |
| Heart health | 1000-2000mg |
| Inflammation/joint | 2000-3000mg |
| Depression support | 1000-2000mg (EPA-focused) |
| Triglyceride reduction | 2000-4000mg |
Common Mistake: Looking at Total Fish Oil
A “1000mg fish oil” capsule may only contain 300mg EPA+DHA. Read the label for actual omega-3 content.
| Product Claim | Actual EPA+DHA |
|---|---|
| 1000mg fish oil | Often only 300mg |
| Concentrated fish oil | 600-900mg per capsule |
| Triple strength | Usually 900mg+ |
EPA vs DHA
| Omega-3 | Primary Benefits |
|---|---|
| EPA | Inflammation, mood, heart |
| DHA | Brain, eyes, cognition |
Most people benefit from both. For depression, higher EPA ratio shows better results.
Best Fish Oil Products
| Product | EPA+DHA/capsule | Price |
|---|---|---|
| Nordic Naturals Ultimate Omega | 1280mg/2 softgels | $$ |
| Thorne Super EPA | ~700mg/capsule | $$$ |
| NOW Ultra Omega-3 | 750mg/capsule | $ |
| Carlson Elite Omega-3 | 1600mg/tsp (liquid) | $$ |
Form Matters
Triglyceride Form (Better)
- Natural form
- Better absorption
- More expensive
Ethyl Ester Form (Okay)
- Cheaper
- Slightly lower absorption
- Still effective at proper doses
Quality Indicators
- Third-party tested: IFOS or ConsumerLab certified
- Oxidation: Fresh fish oil shouldn’t smell “fishy”
- Source: Smaller fish (anchovies, sardines) = fewer toxins
Timing and Side Effects
When to Take
- With food (fat improves absorption)
- Split dose if taking 2000mg+
Common Side Effects
- Fish burps (freeze capsules or take with food)
- GI upset at high doses
- Blood thinning at very high doses
Algae-Based Omega-3 (Vegan)
For vegetarians/vegans, algae-based DHA/EPA exists:
- Nordic Naturals Algae Omega
- Ovega-3
Same omega-3s, plant-based source.
Verdict
Target: 1000-2000mg EPA+DHA daily for most people.
Buy: Concentrated fish oil (500mg+ per capsule) from reputable brands.
Check: Third-party testing certification.
For all supplement guides, see: Best Greens Powder.