It is commonplace to have patients referred to me by other clinicians due to complications in cold and flu scenarios and in almost all of these cases the respective patient was previously administered the patent medicine Yin Qiao San. Upon questioning if they were experiencing Wind Heat symptoms appropriate to Yin Qiao San, the majority of the patients reply: "I don't remember, I was just told this was a good formula for colds or flu regardless of what I was feeling."