Taken in liquid for fast, complete absorption, our harvested spirulina is processed to ensure its vital nutrients and digestion-aiding enzymes are not destroyed by heat. Each convenient serving can be stored two-years without refrigeration. All Re-Vita foods may be consumed on an empty stomach. Recommended serving: 1 - 2 packets a day. Mix with milk, fruit juice, water, food or beverage of choice. May be kept within the reach of children!