NOW Ultra Omega-3 softgels contain 500 EPA and 250 DHA. 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. Take 1 softgel 1 to 2 times daily with food.