Give Histakind 30mg/5ml Syrup to your child by mouth with or without food in the dose and way prescribed by the doctor. It may be prescribed alone or in combination with other medicines. The allergic symptoms may subside after your child has taken the initial few doses of Histakind 30mg/5ml Syrup. In case of serious allergic conditions, your child may have to continue taking the medicine for a week or two. If your child vomits within 30 minutes of taking this medicine, let the child calm down and give the same dose again. However, do not repeat the dose if it is already time for the next dose.