Super DHA each carlson Super DHA soft gel contains 1000 mg of fish body oil concentrate from a special blend of Norwegian fish oils which provides 500 mg of DHA (docosahexaenoic acid)and 100 mg of EPA (eicosapentaenoic acid). This product is regularly tested using AOAC international protocols for potency and purity by and independent, FDA registered laboratory and found to be free of detectable levels of mercury, cadmium,lead,PCB’s and 28 other contaminants.