All opiates and opioids are physically addictive. This means that when used long enough, the chemicals used to relieve pain eventually replace the normal neurochemicals the body produces, and the body develops a dependency, appetite, and craving similar to the craving for food or water. The body now believes it needs the drug, and subsequently, addicts will pursue the satisfaction of their addiction in the same way any person would struggle to avoid starvation.
It will often be advised to take this powerful drug only for short-term use, usually after some injury has been sustained or recovery from a major surgery where recovery could prove painful. However, as with many drugs, there is a “plateau effect” where, as a body adjusts to the presence in the system, it develops a tolerance for its effects. This means that to achieve the same effect as the first few times a dose was taken, larger amounts need to be ingested. Also, as with other opioids, it can produce a “euphoric” effect, an emotional sense of well-being, happiness, or even joy. This combination of making people feel emotionally good while also creating a physical craving in the body is why addiction is a real risk that may require professional treatment.