Eagle is correct, Cathy-- buprenorphine
, Suboxone, and Subutex are all essentially identical. Buprenorphine
has been around for 30 years; it used to be sold under the brand 'temgesic' in liquid form before being made as Suboxone, which is easier to dose. Buprenorphine is used for pain, mostly in Europe-- a skin patch in the UK called 'buTrans' releases 5-20 micrograms of bupe per hour through the skin.
Six years ago, in 2003, Suboxone became available in the US.