Index Nominum is the international drug reference book on active substances, their synonyms, chemical structures and formulas, the brand names, and their manufacturers. The 18th edition has been completely revised and updated and includes a CD-ROM with over 17,000 addresses and links to pharmaceutical manufacturers worldwide. Index Nominum is considered the most successful tool for information on national and international drugs for over 40 years…..an indispensable standard reference work for drugs, trade names and manufacturers.