If you have a cold for a week, it means that the symptoms of the cold are heavy, and usually in the early stages of the cold are viral infections. But in the later stages of the cold, if it has been a week, it is often combined with a bacterial infection. There may also be coughing up yellow sputum or a runny nose, and a sore throat may also appear. At this time, antibiotics are needed for anti-inflammatory treatment, which is more effective. Penicillin can be taken orally as amoxicillin or amoxicillin clavulanate potassium if there is no allergy. If there is no allergy to cephalosporins, you can also use cefixime granules for anti-inflammatory treatment. If there is allergy to all the above drugs, it is recommended to use azithromycin for anti-inflammatory treatment. If the symptoms of runny nose are heavy, you can take cold medicine at the same time, such as cold and fever granules or aminophenol pseudo-lax dispersible tablets, which are more effective. If the cold is serious and the cough and phlegm are also serious, the medicine is not effective and you need to go to the hospital immediately.