Our dropz varieties in the "Pure Line" and "Tea Line" are suitable for children of all ages. They contain no sugar, no sweeteners and no calories. The dropz varieties with caffeine are marked accordingly with "Energy" and should not be used for children, as one drop contains 50mg of caffeine. It should be noted that the dropz of the "Vitamins Line" contain vitamins (about a quarter of the daily requirement of an average adult). Therefore, we recommend that children consume them only from the age of 6 years and not more than one drop per day.The amount of water per drop can be controlled as desired (0.2 - 1 L water with or without fizz).