No, be careful of “zero calorie drinks”.

A diet drink can advertise that it is zero calories if it has less than 5 calories per 100ml by Japanese standard, and most drinks servings are 350-500ml. So these “Zero calorie” drinks can have up to 25 calories in them!

Due to the Japanese standard, “Zero calorie” drinks don’t always have 0 Kcal in them. Don’t believe everything you read!

【Reference】

http://www.aichiken-eiyoushikai.or.jp/shoku_joho-eiyou.html#Q17