Food and Drug Administration (FDA) - Comtan Consumer Information
- Patient FAQ in html format with a link to approved labeling (as pdf).
- http://www.fda.gov/cder/consumerinfo/druginfo/comtan.htm

Comtan (entacapone) - Novartis
- Official pharmaceutical site for this drug used in the treatment of Parkinson's Disease as an adjunct to levodopa/carbidopa therapy.
- http://www.comtan.com/

Comtan
- Full prescribing information from RxList.
- http://www.rxlist.com/cgi/generic3/entac.htm