DHA is a fatty acid that is a primary building block of the brain and eye. It is is essential in eye and brain function. Typically you would get DHA in the food that you eat, however the typical diet contains much less DHA than it did fifty years ago. Neuromins DHA is different from your typical fish oil DHA supplement. Fish oil is the most commonly recognized source of DHA for dietary supplements. However, Martek Biosciences Corporation has developed a process that extracts DHA from algae, the fish's original source, under tightly controlled manufacturing conditions. This yields a highly purified form of DHA called Neuromins® DHA. Neuromins® DHA does not contain other long-chain polyunsaturated fatty acids such as those that may be inappropriate for infants, children and certain adults. Neuromins® DHA is also free of chemical pollutants and toxins that may be present in certain fish oils.