It also produced a sweetener made with stevia and cane sugar, marketed as Sun Crystals. Truvia is made of stevia leaf extract, erythritol, and natural flavors. Zero Sugar products are sweetened with stevia. Others use alternative sweeteners, such as stevia or stevia leaf. Coca-Cola Life is a lower-calorie version of Coca-Cola, made using stevia and sugar as sweeteners. Green Cola, a soda sweetened with stevia, became the Green Cola Company's flagship product. In May 2018, Coca-Cola Life was replaced in New Zealand by Coca-Cola Stevia No Sugar. Two 2010 review studies found no health concerns with stevia or its sweetening extracts. TRPM5 is activated by the sweet glycosides found in the stevia plant. Stevia extracts and derivatives are produced industrially and marketed under different trade names. Currently Evolva produces a wide array of chemicals such as stevia, resveratrol or nootkatone. However, it is not the first product owned by the Coca-Cola Company to use stevia. Rebaudioside A has the least bitterness all the steviol glycosides in the "Stevia rebaudiana" plant. The change proved unpopular, with complaints of the stevia introducing an unpleasant aftertaste. Stevia rebaudiana is a plant species in the genus "Stevia" of the sunflower family (Asteraceae).