This is a prescription painkiller. It contains propoxyphene which is a narcotic painkiller, hence, it is quite different from plain old aspirin. Unfortunately, if you are looking to use it recreationally, it is, indeed, one of the least fun of all narcotics. It is chemically similar to methadone (but, of course, much weaker). Consequently, it will give only a little euphoria (when compared to other narcotics) and it has a very long half-life.