The FDA "Orange Book" of Approved Drug Products, with Therapeutic Equivalence Evaluations , now in its 19th edition (US Government Printing Office), is available electronically at http://www.fda.gov/cder/ob/default.htm. This reference book lists all drug products approved by the FDA. Users may find particularly convenient the "search" features of the electronic Orange Book, which enable one to "search" the list by active ingredient and by proprietary name.
Nightingale SL. Electronic "Orange Book". JAMA. 1999;281(17):1580. doi:10.1001/jama.281.17.1580-JFD90003-2-1