Ultra Omega-3 offers the highest dosage of all our Omega 3 softgel products, which reduces the number of pills needed per day.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 naturally enteric-coated, odour-controlled softgel easier to tolerate.