The Source Spirulina was originally discovered growing naturally on unpolluted alkaline lakes in Central Africa and Mexico where it was integrated into the diet of the mighty Aztec empire. Today Spirulina is ecologically and organically grown in large cultivated ponds around the world. Synergy Spirulina is produced by the world's first and largest producer of Spirulina. Extensive research and development over twenty years has resulted in a Spirulina with the highest levels of all nutrients. It is grown ecologically without pesticides or herbicides and carefully dried in a few seconds preserving full nutritional value without any chemical additives. With Synergy on the label, you can be sure you are getting the finest, purest, most potent Spirulina available.