For centuries, many have relied on white willow bark as a natural solution to pain and inflammation. Within the bark of the white willow tree is a compound known as Salicin, which is akin to aspirin.

Willow trees fall under the Salix genus and include over 400 species, with two of the most well-known medicinal species being the white willow (Salix alba) and the black willow (Salix nigra).