A plant or plant part exploited for its aroma, flavour, or therapeutic characteristics is known as a herb. One sort of dietary supplement is herbal medicine. Tablets, capsules, powders, teas, extracts, and fresh or dried plants are all available. Herbal remedies are used by people to try to maintain or improve their health. Herbal medicine varies from conventional medicine in that it employs whole plants, usually in the form of an impurified extract; it also employs herb combination (polypharmacy); and it employs diagnostic methods centred on treating "underlying causes." Herbalists typically focus on treating medical conditions and enhancing one's overall well-being.