One of the most prescribed narcotic analgesics for pain relief is OxyContin. It is true that it works as painkiller for severe injuries like dislocations, fractures, arthritis, lower back pain, but it is also used illicitly as drug on the street due to it’s main component, oxycodone.
Oxycodone can be found in many narcotic analgesics like [...]

Hydrocodone is an antitussive (cough suppressant) and analgesic agent for the treatment of moderate to moderately severe pain. Studies indicate that hydrocodone is as effective, or more effective, than codeine for cough suppression and nearly equivalent to morphine for pain relief.
Hydrocodone is very frequently prescribed. There are several hundred brand name and generic hydrocodone products [...]