A compilation of prescription product package inserts. Additional information includes contact information for manufacturers, a list of poison control centers, and very limited tablet identification. The company maintains a Web site, pdrhealth.com, which contains patient appropriate information. Information from the Physicians' Desk Reference (PDR) is also available online at http://www.pdr.net or http://www.pdrhealth.com, or for mobile devices (PDRBooks®). In addition to the original PDR, there are a variety of focused editions, including the PDR® for Herbal Medicines, PDR® for Nutritional Supplements, PDR® for Ophthalmic Medicines, PDR® for Nonprescription Drugs.