Can I give a supplement to my three year old girl who always falls sick when the season change?

Does your child has allergy of any sort? Especially with current haze season, it can make your child's health worsen. Also because she is young, supplement can help her boost up her immune system. Do try feeding her pre and probiotic supplement which will help with gut's health, Some of my personal suggestions are LactoGG and Arabic Gum. They taste nice and easy to give to young children.