Ardor Organic Tropical Mango Sparkling Water has beautiful fragrance and complex flavor of a ripe tropical mango. It contains 100mg of Organic Caffeine, 200mg of L-Theanine, and 100mg of Sodium (Sea Salt) for hydration. It has no sugar or artificial sweeteners. We source the best and only available certified Organic L-theanine, an amino acid naturally found in Organic Green Tea. L-Theanine has been shown to provide better mental focus, improved sleep, relaxation, increased cognitive performance, and a boost to your immune system.