Dietary Supplements. Whole blue-green algae superfood. Meet Your Herbs. Enter ID No. at GaiaHerbs.com. USDA organic. One of the simplest forms of life on the planet, these blue-green algae are a storehouse of nutrients. Spirulina is a vegetarian source of vitamins, minerals, chlorophyll and GLA, an essential fatty acid. Gaia Herbs tests each batch for purity and potency to insure safety and validated wholefood nutrition. Certified organic by Oregon Tilth.