The bark of White Willow (Salix alba) contains salicin, similar to salicylic acid, the active compound in over-the-counter 'aspirin' and other acetylsalicylic (ASA) products.
Salicin in White Willow bark is converted to salicylic acid in the body, and works in the same fashion as its synthetic counterpart, ASA. It is anti-inflammatory and analgesic (pain-relieving), and indicated for many of the same uses as aspirin including headaches, muscle and joint aches and general body pain, fever, and inflammation.
For more information on the benefits of White Willow bark, visit: White Willow extract
(Caution: If you are on any medications, always consult your doctor first before using any herbal remedies or dietary supplements.)