The #1 selling omega-3 in the US, Ultimate Omega offers concentrated levels of omega-3s for high intensity essential fatty acid support. Ultimate Omega helps optimize function, supports brain health, and has been clinically shown to support a healthy heart. Every batch of Nordic Naturals fish oils is tested by a third-party certified lab for environmental toxins, including heavy metals. All fish oils are in the triglyceride form and surpass the strictest international standards for purity and freshness. Certificates of Analysis available upon request. - Wild caught. Pure. No fishy aftertaste. Friend of the Sea certified.