DHA 90sg provides a minimum of 45% DHA in an easy-to-swallow small capsule. Fish Oil Concentrate -A rich source of docosahexaenoic acid (DHA, C22:6 omega-3). DHA is important for maintaining the fluidity and function of cell membranes, particularly in the retina and the brain. A rich source of docosahexaenoic acid (DHA) prepared from molecularly distilled cold water fish, such as cod, mackerel, salmon, and shark. DHA is an omega-3 fatty acid and is important for maintaining the fluidity and function of cell membranes, particularly in the retina and the brain. The product provides a minimum of 45% DHA in an easy-to-swallow, small capsule. Every batch is tested to insure purity and the absence of heavy metals and other potential contaminants