are there any pharmacies at guangzhou airport. If not where is the nearest?

As I know, there is no pharmacy in the airport, but I heard you can buy some regular medicine in the convenient store there.

Besides, three medical centers are set there, located at Gate27 on the first floor of Terminal (24 Hour service); on the third floor of west-bridge building (7:30 ~ 21:30) and on the second floor of East II building (7:30 ~ 21:30). Maybe you can get some help there. Just give it a try!