Abuse

Morphine is a drug that is very commonly abused.
Morphine is typically used in its injectable form when being used by addicts.
Morphine used by addicts can range in concentration from 4% to 21%.
Morphine is a very addictive drug. Addicts quickly develop a tolerance, meaning that they must use more of the substance each time in order to feel the effects. Addicts also quickly become highly dependent on the drug.
Addicts often use morphine for its mind-numbing effects and hallucination inducing properties.
Before morphine's side effects were fully known and understood, the drug was administered to patients entirely too often. As a result, many people became dependent on the drug. Eventually, as people learned more about the drug, its use and administration to hospitalized people became more heavily regulated. Today, the drug is administered with much less frequency.