Are there any drawbacks with having too much vitamin C in a child’s diet (4 to 6 year old)?

Children, who eat a variety of foods, including fruit and vegetables do not need vitamin supplements. Vitamin C is found in a wide range of fruit and vegetables, especially spinach, tomatoes, potatoes, broccoli, berries, oranges and other citrus fruits, are the best sources of vitamin C.
Children should be able to get all the vitamin C they need from their daily diet. In the EU the recommendation is 25 mg/day for 4-6 years old children.Usually children cannot get too much by a normal diet. In addition vitamin C is a water-soluble vitamin and any excess is excreted in the urine. The toxicity of vitamin C is low and there is no risk to health of a high intake. Feeding and nutrition of infants and young children Guidelines for the WHO European.