iStevia is a Natural & Healthy Zero-Calorie Sweetener and is the best Natural Sugar Substitute. It helps Lose Weight, Controls Diabetes & High Blood Pressure. It is good for Dental Care and Safe for Children. It is Heat Stable enabling its usage in Cooking & Baking. You can enjoy Green Tea, Coffee, Lassi, Nimbu Pani, Cakes, Sweets, Juices etc. using iStevia. 15ml bottle has 300 drops and sweetness equation is 3 drops = 1 teaspoon of sugar.