Wild cherry bark is a natural substance derived from the bark of the wild cherry tree (Prunus serotina). It has a long history of use in traditional medicine, particularly for respiratory issues. The bark is rich in compounds such as glycosides, tannins, and flavonoids, which are thought to contribute to its medicinal properties.

It has a slightly bitter taste and is often used as a tea or in capsule form. Wild cherry bark is most commonly used to support respiratory health and as a natural expectorant to help relieve cough and congestion.