Herbal supplements use plants to treat health conditions. Medicinal plants have been and will continue to be, a valuable part of health care. These plants and plant substances are highly effective and safe in the right dosage and when used correctly with other herbs and treatments. Naturopathic doctors are extensively trained in both the art and science of botanical medicine. Healing herbs can be used in various forms, including teas, tinctures, capsules or tablets, extracts, juices, poultices, ointments, and essential oils.