The use of white willow bark for medicinal purposes has a long history. Ancient Egyptians used white willow for inflammation. The Greek physician, Hippocrates, wrote about white willow's ability to ease aches and pains and reduce fevers. White willow bark has been used as a treatment for pain and fever in China since 500 B.C. and Native Americans used white willow for headaches, fever, sore muscles, rheumatism and chills.