White willow bark (Salix alba) is classified as an analgesic, anti-inflammatory, and fever-reducing herb. It contains salicin, a compound similar to aspirin, which gives it its pain-relieving and anti-inflammatory properties. White willow bark is commonly used to alleviate pain, including headaches, muscle pain, and joint pain, and is often used to manage conditions like osteoarthritis and back pain. It is also used to reduce fever and inflammation. White willow bark can be consumed as a tea, tincture, or supplement. Due to its similarity to aspirin, it should be used with caution in individuals who are allergic to aspirin or have certain medical conditions.