Some herbal remedies may help to calm a child's cough. Warm liquids such as caffeine-free tea, broth or hot water with lemon can help loosen up mucus and soothe a sore throat. Here are a few natural remedies for cough in children: Consider use of a humidifier: Dry air can make a child's cough worse. Effective Home Remedies for Cough in Kids. Before trying any herbal or alternative remedies, contact your child's pediatrician. However, this cough can last longer and result in a whooping sound. Whooping cough, also known as pertussis, is caused by a contagious bacterial infection. Drink warm fluids: Encourage your child to drink plenty of fluids. When there is an irritant or blockage in your upper air passages and throat, your brain will tell your body to cough to remove that element. Wet Cough vs. Dry Cough in Kids: Causes, Symptoms, and Home Remedies Knowing the difference between a hacking dry cough and a productive wet cough is the first step in helping your child feel better. The characteristics of whooping cough are similar to that of dry cough. Home remedies to help soothe a child's cough. Some remedies may be inappropriate for your child's age, or may react with other medications that he is taking. 28 Natural Home Remedies For Cough For Kids And Adults Coughing is one of the most common health problems that a lot of people have to suffer from it now.