ABSTRACT
Horehound or hoarhound, is a hairy, bitter-aromatic, perennial herb native to the Mediterranean region of Europe and Asia but naturalized in North America. Designated botanically as Marrubium vulgare L. and classified in the mint family, or Lamiaceae, its leaves and flowering tops have long been widely used, both as a folk medicine and a flavoring agent. The common name, horehound, derives from the abundant whitish hairs that cover the plant's leaves, giving them a hoary appearance; hound refers to the use of the plant by the ancient Greeks to treat mad-dog bite.
