Herbal Medicine, sometimes referred to as Herbalism or Botanical Medicine, is the use of herbs for their therapeutic or medicinal value. A herb is a plant or plant part valued for its medicinal, aromatic or savory qualities. Herb plants produce and contain a variety of chemical substances that act upon the body. Herbs or herbal remedies are used to maintain health and to prevent, alleviate, or cure disease. Herbal medicine is the oldest form of healthcare known to mankind. Herbs have been used by all cultures throughout history.