Bio-Botanica, Inc. Horehound Herb In Propylene Glycol is a product belonging to the plant family Lamiaceae. Its Latin name is Marrubium vulgare. The key chemical constituents include diterpenes, including marrubiin (0.3-1.0%) and marrubenol, flavonoids, alkaloids, including betonicine and stachydrine, and volatile oil (0.6%). This product falls into the functional categories of food, beverage, and dietary supplements, with a focus on digestive health, weight management, and detoxification.