I currently use Janssen Duragesic Fentanyl transdermal system at a cost of $300.00 and Caremark my prescription carrier insists on a generic. They gave me Sandol and a few days later I was in the hospital with chest pain. When I went back to Janssen the pain went away. Are there any other generic brands available. Please give me the Manufactures name. Also are generics as good and the Janssen brand


