The Natural Fish Oil Concentrate used in this softgel is manufactured under strict quality control standards. It is screened for the absence of potentially harmful levels of contaminants (i.e. mercury, heavy metals, PCB's, dioxins, and other contaminants). This Fish Oil Concentrate is primarily derived from sardines, anchovies and mackerel.*  Note: Unless otherwise noted, this product has not been evaluated by the Food and Drug Administration. Our natural products are not intended to diagnose, treat, cure, or prevent any disease.