When a patient has a dry cough after a cold, the following drugs can be taken to relieve the symptoms: 1. You can take Four Seasons Anti-Viral Oral Solution to relieve the dry cough caused by a cold due to viral infection, and when the virus in the respiratory tract is killed, the dry cough symptoms will improve, which can play the role of etiological treatment. 2. The main effect is to treat the dry cough symptomatically. 3, you can contain silver yellow tablets, which can relieve the dry cough caused by the discomfort of the throat due to the cold. You can also take Chinese medicines such as vitamin C silver warp tablets and Pan Lan Gen granules for treatment. Patients also need to pay attention to the diet, not to eat spicy food, and not to eat too salty food, need to eat more fruits and vegetables.