Box 6.2.h lists national and international trials registers.
In addition, Drugs@FDA provides information about most of the drugs approved in the US since 1939. For those approved more recently (from 1998), there is often a ‘review’, which contains the scientific analyses that provided the basis for approval of the new drug.
o www.accessdata.fda.gov/scripts/cder/drugsatfda/index.cfm
Other national and regional drug approval agencies may also be useful sources of trial information.