Spirulina - an excellent tonic for the body. Very high nourishment value herb. Spirulina is the common name for human and animal food supplements similar to Blue-Green Algae. Spirulina comes from two different species of cyanobacteria Arthrospira platensis, and Arthrospira maxima. Spirulina is cultivated around the world, and is used as a human dietary supplement as well as a whole food and is available in powder or liquid drops or spray form.