Derwent World Drug Index
Overview
Derwent Publications maintains this drug database of 52,553 drugs and pharmacologically active compounds, including all marketed drugs. WDI also contains 250,000 crossreferences, 72,000 trade names, 25,000 manufacturers, 6000 International Non-proprietary Names, 8000 US Adopted Names, 20,000 Trial Preparation Codes and more, including extensive pharmacological data, such as indications and usage, interactions, adverse effects, mechanism of action, etc.