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Heart and Brain Health 500 mg Per SoftgelFrom Food-Grade CalamariDietary Supplement Produced Only from Norwegian Line-Caught Food-Grade Calamari (Squid)Supports Cognitive Function and Healthy Brain Development Science-Backed Quality Since 1969Are you EFA-savvy? Omega-3 science is rather complex but most interested individuals recognize the big players EPA and DHA present in marine oils. And while most fish oils provide more EPA than DHA the evidence now shows that DHA is actually the body's preferred omega-3. Swanson has you covered with our Super DHA 500 omega-3 supplement featuring Calamarine® Marine Oil. Swanson Super DHA is the next generation eco-friendly and sustainable omega-3 supplement that offers more DHA than any other marine source.