chapter 168 Drug allergic skin disease

Senen Smith knew very well that except for some folk prescriptions handed down from ancient times, the others were the best summary of the old man's life-long medical practice. For example, the effect of this dehumidifying oil was much better than that of the western medicine ointment such as Pi Yan Ping.

However, the price of a small box of Piyanping is more than ten yuan in the market. If Senen Smith's dehumidifying medicinal oil is produced and promoted well, the market benefits...