This medicated plaster is an authentic old style medicated plaster. It has been imported directly from Grand-master Lee Kiang Kay (head of the Fukienese Flying Crane Kung Fu style) in Malaysia. Simply apply to affected area. Plasters can be somewhat heated and are re-usable. Not recommended on open wounds. Attention: This product cannot be used on pregnant women as It may cause miscarriages. Please avoid use on or even near pregnant women.