
When selecting the best omega-3, we evaluated EPA and DHA concentration per capsule, fish oil purity (heavy metal and toxin testing), omega-3 form (triglyceride vs ethyl ester), freshness (oxidation markers), and value for money. The best omega-3 contains at least 500 mg EPA+DHA per capsule. Triglyceride form absorbs 70% better than ethyl ester. Freshness is critical — oxidized fish oil is not only unpleasant-tasting but also less effective and potentially harmful. We also assessed capsule size and fishery sustainability.
| Criterion | Why it matters | What to look for | Red flag |
|---|---|---|---|
| EPA + DHA content | Only these fatty acids deliver health benefits | At least 500 mg EPA+DHA per capsule | Only "fish oil 1000 mg" — EPA/DHA not specified |
| Omega-3 form | Triglyceride form absorbs better | rTG (re-esterified triglyceride) — best bioavailability | Ethyl ester (EE) — cheaper but poorer absorption |
| Purity and testing | Fish oil may contain heavy metals and toxins | IFOS certification, third-party testing | Purity not tested, origin unknown |
| Freshness | Oxidized fish oil is harmful | Low TOTOX value, no fishy smell | Strong fish taste, sour burps — indicates oxidation |
| Price per gram EPA+DHA | The right way to compare omega-3 products | Calculate price per 1 g EPA+DHA | Low price but very low EPA+DHA content |
For beginners, we recommend fish oil capsules containing at least 500 mg EPA+DHA per capsule. Triglyceride form (rTG) is the best choice, though ethyl ester is a more affordable alternative. Start with 1 capsule daily with food. If capsules are too large, choose liquid fish oil.
Quality omega-3 in Estonia typically costs €0.15-0.40 per daily dose (1-2 capsules). Triglyceride form (rTG) is pricier (€0.25-0.40), ethyl ester more affordable (€0.15-0.25). Concentrated omega-3 (over 60% EPA+DHA) costs more but you need fewer capsules per day.
Fish oil is the most traditional and affordable EPA+DHA source. Algae oil is a plant-based alternative for vegans — it contains DHA and some EPA. Fish oil typically has higher EPA content and is more affordable. Algae oil is the best choice for vegans and those concerned about fish stocks.
For general health support, 250-500 mg EPA+DHA daily is recommended. For heart health, 1000-2000 mg EPA+DHA is suggested. Anti-inflammatory effects may require up to 3000 mg. For higher doses, consult your doctor, especially if taking blood thinners.
Simple test: break a capsule open — quality fish oil smells mildly ocean-fresh, not bad. Another sign is clarity — good fish oil is clear, not cloudy. If capsules cause fishy burps, this indicates oxidation. Store fish oil capsules in a cool, dark place.