White oak is a tree. The bark is used to make medicine. White oak bark is used as a tea for arthritis, diarrhea, colds, fever, cough, and bronchitis; for stimulating appetite; and for improving digestion.

Oak bark ( Quercus alba) comes from trees of the Fagaceae family, typically white oak varieties native to North America. It’s derived from the inner bark and round growths known as galls that form on the tree. ).

White oak bark, scientifically known as Quercus alba, translates to “fine tree.” Historically used to remedy a long list of conditions, this ingredient is mainly added to washes, baths, teas, tinctures, and other infusions. White oak bark may benefit both human hair and skin.

As a diuretic, white oak bark provides an excellent flush for the system, which can help improve kidney and liver function and also combat both kidney and gallstones. White oak bark is also anthelmintic or anti-parasitic and can therefore be used to help rid the body of unwanted intestinal invaders such as pinworms.