Buying medicine in Shenyang pharmacy will not affect the health code. Even if you buy the antipyretic health code, it will generally not change color, but only if you are not in a high-risk area or close contact.
During the epidemic, it was stipulated that pharmacies could not sell antipyretics. If a friend has a cold and fever in Beijing, it is recommended to go to the hospital for examination to eliminate the risk. You shouldn't buy antipyretics for them without authorization.