Spirulina Gandalf - Pure Organic Spirulina 600mg 150 TabletsSpirulina, also known as blue green algae (Cyanophyaceae), is one of the oldest living organisms on earth. It has existed for more than three billion years. Benefits: Source of provitamin A to help maintain eyesight, skin, membranes and immune function, and to help in the development and maintenance of bones and teeth and night vision. A source of the essential fatty acid gamma linolenic acid (GLA) for the maintenance of good health.