... new natural sweetener 2.It is extracted from the leaves of stevia ... . The sweetness of it is 200-400 times of cane sugar, but only 1/300 calorie of it ... . A large quantity of medical experiments shows that the stevia is no harm ,no ... carcinogen, safe as food etc...It can prevent people from hypertension,diabetes mellitus, obesity, heart diseases, tooth decay etc. And is ...