Growth is especially rapid during the first 12 years of a child's life. It is common for children to be fussy eaters and you may experience your child refusing to eat certain foods. Children normally grow out of fussy eating but in the meantime nutritional support such as Wellkid Pastilles can help safeguard a child's nutritional intake as part of a balanced diet. Growth is especially rapid during the first 12 years of a child's life. It is common for children to be fussy eaters and you may experience your child refusing to eat certain foods. Children normally grow out of fussy eating but in the meantime nutritional support such as Wellkid Pastilles can help safeguard a child's nutritional intake as part of a balanced diet.