The oxy was prescribed as a Vicodin painkiller. The Valium as a muscle relaxant to ease up the muscle spasms around the injury.
Neither of them really work, by the way.
I am very careful not to drive when I'm "feeling" them, but who knows what is in my system when I am not?
When I hurt my back I had all kinds of therapy, ultrasonic heat massage (awesome). After 6 weeks of zero progress, they prescribed a drug called, Soma. Not the drug from Brave New World but what a difference. My back was better in two days.