Background: Flos Lonicerae japonicae (FLJ; Kinginka) is the dried flowers and buds of the Japanese honeysuckle Lonicera japonica Thunberg. FLJ has been used as a Japanese Kampo medicine to treat infectious and inflammatory diseases. However, it is not clear which constituent of FLJ is responsible for its pharmacological effects. Methods: FLJ was extracted with methanol and fractionated by hydro...
