Stevia leaves contain a substance called stevioside which is 300 times sweeter than sucrose - white sugar. Stevie has zero caloric value. To Stevia´s beneficial effect belongs also that it effectively kills various types of bacteria in oral microflora, which is one reason why it is used for rinsing the mouth. The scientific research shows that American Indians consuming this herb almost did not suffer from tooth caries. It is almost miraculous a herb for diabetics and people who want to lose weight, but not only for them. Sweet substances in stevia does not cause an increase in blood sugar levels. Since it is a natural substance E 960 Steviol as not followed by CEFF an artificial sweetener and is allowed by CEFF rules.