QUELL Fish Oil® is Supercritical CO2 extracted oils in triglyceride form, manufactured in Germany exclusively for Douglas Laboratories®. QUELL Fish Oil is unique among other fish oils for its supercritical extraction, purity, bioavailability and concentrations. It is offered in fish gelatin softgels, and the taste and smell of fish is significantly reduced due to the supercritical extraction. Ultra EPA contains a higher ratio of EPA to DHA that is indicated for cardiovascular, joint or general health.