The National Library of Medicine (NLM) Drug Information Portal is now available for mobile devices. http://druginfo.nlm.nih.gov/m.drugportal

This mobile optimized web site covers over 32,000 drugs and provides descriptions, drug names, pharmaceutical categories, and structural diagrams.  Each record also features information links to 19 other resources including NLM PubMed, NLM LactMed, and Drugs@FDA.