John and Susan Carlson founded Carlson Laboratories in 1965. Over the next forty years they progressed from one vitamin E formula to an awarding winning line of Norwegian fish oils and a full line of vitamins, minerals, and nutritional supplements. Their Cod Liver Oil and Fish Oil liquids come in dark glass bottles to protect the integrity of the Essential Fatty Acids inside. They produce a good product and are proud to have their family name on it.