Stur® is a natural fruit flavour water booster that is lightly sweetened with Stevia leaf extract. It has 0 sugar, 0 calories, and 100% of your daily requirement for Vitamin C. Vitamin C may help to maintain a healthy immune system and helps to avoid tiredness and fatigue. Available in several flavours, Stur helps people drink more water, by adding as little or as much flavour as they want. Stur is a family-run company, passionate about better health. Our mission is to help millions drink more water, and we're really proud of developing a good-tasting product without any artificial sweeteners, flavours or colours.