After taking vitamin C, you are usually able to take some cold medicine again. This is mainly for patients with acute upper respiratory tract infections caused by viruses, bacteria and other invasions due to decreased immunity, and need to take cold medicine to treat the symptoms. The ingredients contained in cold medicine include common paracetamol and acetaminophen, as well as some proprietary Chinese medicines, such as Banlangen. This time to relieve nasal congestion, runny nose, sneezing and other symptoms, while eating a little vitamin C, but also to reduce the throat, nasal mucosa capillary permeability, can reduce these symptoms, and vitamin C can also improve the body’s immunity, for the fight against cold-causing viruses, bacteria and so on have a certain role in resistance. So vitamin C and cold medicine synergistically taken together, can make the cold recovery as soon as possible, is favorable.