Triglyceride Form of Omega-3 Fish Oil + Vitamin D-3330 EPA / 220 DHAMolecularly Distilled1000 IU Vitamin D-3The 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).