Norwegian kelp is a brown seaweed harvested from the Atlantic coastline of eastern North America, Greenland, Norway, Britain and Ireland. Like other varieties of kelp, Norwegian kelp is a rich source of natural iodine. It also contains at least 14 vitamins and 18 minerals, including folate, niacin, vitamin K, calcium, zinc, potassium and manganese. Aside from the nutritional boost, kelp is also added to bath water and to foot soaks to help ease muscle aches, stiff joints and minor skin irritations.
This variety of brown algae is commonly called kelp, but is also known as knotted wrack and rockweed. Like other marine plants, kelp is a rootless aquatic plant that anchors itself to the ocean floor by using a structure called a holdfast.
An abundant source of iodine, calcium, amino acids and various trace minerals, kelp powder is mixed into foods or encapsulated as a dietary supplement.