Double Strength 500 DHA / 250 EPA Molecularly Distilled - Enteric Coated Cardiovascular Support A Dietary Supplement Cholesterol Free Kosher - Contains Gelatin Omega-3 Fish Oils Family Owned Since 1968 GMP Quality Assured NOW DHA-500 has twice the DHA (500 mg per softgel) as in our regular strength product (250 mg per softgel). The natural fish oil concentrate used in this softgel is manufactured under strict quality control standards. It is tested to be free of potentially harmful levels of contaminants (i.e. mercury, heavy metals, PCB's, dioxins, and other contaminants). Those who experience nausea or reflux from other fish oils should find this enteric-coated, odor-controlled softgel easier to tolerate.