Beta-Blockers (Beta-Adrenergic Blocking Drugs) Texas Heart Institute Heart Information Center information page about this group of medications used to treat high blood pressure, congestive heart failure, arrhythmias, and angina. http://www.tmc.edu/thi/betameds.html

Coreg and Other Beta-Blockers Information for patients with congestive heart failure. http://www.chfpatients.com/coreg.htm

Zileuton Information For Consumers Brief patient FAQ in html format from Medline Plus. http://www.nlm.nih.gov/medlineplus/druginfo/medmaster/a697013.html