Suntory Dakara Zero Style

Here is a popular and interesting sports drink. Suntory's Dakara Zero Style claims zero sugar, zero fat and zero salt - thus the name. It also claims to retain its sweetness and to have a good balance for your body (presumably from the calcium, potassium and magnesium contained).

With all these zero's I was surprised to see that there are 17 kcal per 100 ml. That is not much less than low calorie beer (happoshu can be as little as 24 kcal per 100 ml). A closer look shows that there are sugars added, just not table sugar (zero 砂糖 but not zero 糖類 or zero 糖質).