I bought all of them. The derived cough-relieving treasure for children is used when they have a cold. It is very useful for fever and cough caused by a cold! He used to cough badly when he had a cold. Sometimes I catch a cold and cough is not good. If I don't take good care of it, it will become pneumonia. Derived children's cough-relieving treasure is different, which can relieve fever and cough. This time, after the child caught a cold and ate the derivative antitussive treasure, he got over the cold and coughed!