Demerol (Pethidine or meperidine) is classified as a narcotic pain reliever. It is an opioid and similar to morphine. The main purpose of Demerol is to treat moderate-to-severe pain. Demerol can be addictive. It is usually given by injection or taken orally.
TMZ has reported that Michael Jackson's death was a result of a Demerol overdose. Jackson died on June 25, 2009.TMZ: Jackson Family: Demerol Shot Caused Death(June 26, 2009)
Prescription
Demerol injections are usually given for a short period of time regularly, often every 2 or 4 hours, to prevent pain. Demerol in oral form is usually also prescribed for a shorter period of time and to be taken on a regular basis during that time.MedicineNet: Meperidine Injection MedicineNet: Meperidine Oral Liquid
Addiction
Demerol can be addictive. Several famous people have been rumored to been addictive to demerol. Robert F. Kennedy's son David Kennedy died form an overdose of several cocaine, demerol and mellaril.The New York Times: 3 Drugs are blamed in David Kennedy Case(May 17, 1984)