http://www.lotrimin.com/our-products/athletes-foot-cream.php
https://www.accessdata.fda.gov/drugsatfda_docs/label/2002/21408lbl.pdf
http://www.uptodate.com/contents/butenafine-drug-information?source=search_result&search=butenafine&selectedTitle=1%7E7
http://online.factsandcomparisons.com/MonoDisp.aspx?monoID=fandc-hcp12313&quick=-4538%7c5&search=-4538%7c5&isstemmed=True&NDCmapping=-1&fromTop=true#firstMatch