Marrubium vulgare (White Horehound) - Feed Ingredient

Marrubium vulgare, commonly known as White Horehound, is a perennial herb in the mint family (Lamiaceae) native to Europe and naturalized in many regions worldwide. The aerial parts of the plant are harvested and dried for use in herbal formulations.

White Horehound contains diterpenes (notably marrubiin), flavonoids, and volatile oils. It has a long history of use in traditional medicine, especially for respiratory and digestive support in other species. Its inclusion in equine products is based on traditional uses rather than equine-specific evidence.