Hyland's 4 Kids Cold 'n Cough Liquid. If your child has a list of cold symptoms - you need a multi-symptom solution. Hyland's 4 Kids Cold 'n Cough is the go-to cold product that so many parents have come to depend on. Its formula is designed for kids 2 years old and up. It eases the sneezing, soothes the sore throat, and loosens up the congestion.* If it could talk, it would even read to your child to sleep. We're working on that.