Polygonum multiflorum, better known as Chinese knotwee or Flowery knotweed, is a widely used Chinese herb. It is said to rejuvenate the body, and is also commonly known as fo-ti, fo-ti-teng, ho shou wu, or he shou wu (何首乌). He Shouwu, a Chinese man who is reputed to have lived until the age of 132, is the first consumer of this herb to be reported.