Horehound is used to make hard lozenge candies that are considered by folk medicine to aid digestion, soothe sore throats, and relieve inflammation.
Horehound was introduced to southern Australia in the 19th century as a medicinal herb. It became a weed of native grasslands and pastures where it was introduced with settlers’ livestock, and was first declared under noxious weeds legislation. It now appears to have reached its full potential distribution.
It occupies disturbed or overgrazed ground, and is favoured by grazing because it is highly unpalatable to livestock. It may persist in native vegetation that has been grazed.
Marrubium vulgare is also used as a natural grasshopper repellent in agriculture.