Fish Oil & Omega-3 Supplements: What You Need to Know
On February 25, 2026 By newsroom Topic: Food Guide
Consumer Reports reviewed 15 top-selling fish oil brands to assess their quality and claims. Here's what they found:
1. Test Results Overview
- EPA & DHA Content: All tested brands contained the labeled amounts of EPA and DHA, key omega-3 fatty acids that support heart health.
- Contaminants: None exceeded limits for lead, mercury, dioxins, or PCBs as set by the U.S. Pharmacopeia (USP) or European Union.
- Proposition 65 Warning: Some samples had PCB levels that could trigger a warning under California's stricter regulations (Proposition 65):
- Affected brands: CVS, GNC, Sundown, and Nature's Bounty (two samples).
2. Claims vs. Reality
- Many brands claim to be “purified” or free of contaminants like PCBs and mercury.
- These claims lack a regulatory definition, and the FDA hasn’t enforced actions for contaminants, citing no public-health risk.
3. Enteric-Coating Issues
- Kirkland Signature: Two samples failed USP disintegration tests, meaning their enteric coating (intended to prevent fishy aftertaste) dissolved in the stomach instead of the small intestine.
- Oddly, Kirkland Signature is labeled “USP Verified,” which typically indicates compliance with quality standards.
4. Omega-3 Recommendations
- Dietary Sources: Most people can meet their omega-3 needs by eating fatty fish (e.g., salmon, sardines) twice a week.
- For Heart Disease: People with coronary heart disease need about 1 gram of EPA and DHA daily, often requiring supplements.
- Consult a Doctor: Omega-3 supplements may interact with certain medications.
5. Costs
- Quality supplements range from 17 to 64 cents per day for 1 gram of combined EPA and DHA.
- Look for supplements that meet recognized quality standards.
Bottom Line
- Prioritize Diet: Eating fatty fish provides omega-3s and avoids potential contaminants.
- Choose Wisely: If you need supplements, consult your doctor and choose verified brands that meet quality standards.
- Check Labels: Be aware of California's Proposition 65 warnings for PCBs on certain brands.
Staying informed ensures you make the best choice for your health!
