http://www.accessdata.fda.gov/drugsatfda_docs/label/2002/20126slr006_Zonalon_lbl.pdf
http://www.uptodate.com/contents/doxepin-topical-drug-information?source=search_result&search=doxepin&selectedTitle=1%7E62
http://www.micromedexsolutions.com/micromedex2/librarian/ND_T/evidencexpert/ND_PR/evidencexpert/CS/7DBC00/ND_AppProduct/evidencexpert/DUPLICATIONSHIELDSYNC/3C2FBE/ND_PG/evidencexpert/ND_B/evidencexpert/ND_P/evidencexpert/PFActionId/evidencexpert.GoToDashboard?docId=190675&contentSetId=100&title=Doxepin+Hydrochloride&servicesTitle=Doxepin+Hydrochloride&brandName=Zonalon#
