Codeine
Codeine is used as a light to moderate pain reliever. If you have ever had any kind of surgery, broken bones, or any other medical condition that causes strong pain you have most likely been prescribed codeine. It is one of the most common prescribed pain killers available. It is usually taken in pill form, although it is available in syrup form. Cough medicines usually contain a small amount of codeine which helps control coughing. While on codeine your reactions slow and your judgment becomes impaired. The is a moderate chance of dependence if the drug is abused. Takers of codeine for pain killing purposes will notice that the euphoric feeling fade quickly as they continue to use the drug because of the quickly built tolerance.
Percodan, Percocet, Tylox, Oxycodone are all common forms of codeine.