It is an evidence-based information resource for professionals, researchers, and general public. As a single source of information from the Federal Government about a wide range of health topics, CHID is a convenient reference tool for health professionals, patients, and the public. ClinicalTrials.gov provides patients, family members, health care professionals, and members of the public easy access to information on clinical trials for a wide range of diseases and conditions. This site currently contains approximately 5,000 clinical studies sponsored primarily by the National Institutes of Health. This online version of the PDR for Herbal Medicines allows basic and advanced full-text searching as well as searching by herbal name, category, photo, indication, or side effect.
Free registration is necessary to access the site.
This particular section of the MeSH Tree Structure can be accessed here . Other databases may use a combination of MeSH and free-text search terms to describe their contents. Consult the therapies glossary and the Dictionary of Alternative-Medicine Methods for useful search terms.