QÜELL Fish Oil is Supercritical CO2 extracted oils in triglyceride form, manufactured in Germany exclusively for Douglas Laboratories. QÜELL Fish Oil is unique among other fish oils for its critical extraction, purity, bioavailability and concentrations. Supercritical CO2 advanced technology is the superior protection against oxidation. The extraction method of fish oil uses less heat and no chemical solvents when compared to molecular distillation, resulting in fewer unwanted isomer formations and “cleaner” oil. Supercritical fluid extraction uses CO2 (carbon dioxide) instead of oxygen to gently extract the fatty acids, which also protects them from microorganisms that can’t survive without oxygen. No chemical preservatives, solvents, or undesirable compounds are found in QÜELL Fish Oils. Heavy metal and contaminant levels measure significantly lower than the standard. Recent scientific data shows the triglyceride form of fish oil is better absorbed when compared to ethyl esters. Recent data have demonstrated that omega-3 fatty acids delivered in a triglyceride form may result in greater plasma levels and a higher omega-3 index compared with omega-3 fatty acids delivered in the form of ethyl esters. Many fish oils contain only about 30% omega-3 fatty acids, of which roughly 18% is EPA and 12% DHA. The remaining 70% is a varying mixture of other components. In other words, regular fish oil contains less than a third of the desired active ingredients and more than two thirds of “other” components. These other components may include cholesterol, omega-6 fatty acids, saturated fatty acids, oxidation products and contaminants. Highly concentrated fish oil, like QüELL, provide at least 75% active ingredients, leaving less room for nonessential compounds.