Pu Di Lan Oral Liquid and Four Seasons Anti-Viral Oral Liquid, both are very good cold remedies, and there is not much comparative relationship between the two, both can do the job very well. Generally busulfan works a little better for bacterial infections of cold and flu, while Four Seasons Anti-Viral Oral Solution works a little better for viral colds. The pandanus can control the inflammation very well and inhibit the growth of bacteria, it also has some effect on the virus, the point is that it can clear the heat because it contains very good medicine called dandelion. And Four Seasons Anti-Viral Oral Liquid, which is a little more effective for viral colds, is more commonly used for wind-heat colds, influenza and so on. In the process of application, if the patient has herpes of the mouth and lips, sore throat, and has some khat symptoms, you can apply the antiviral oral solution for treatment. If the patient has swollen tonsils with obvious heat symptoms, he can be treated with busulfan.