The methadone that is prescribed at clinics to help people that are trying to come off of heroin is usually in liquid form but is also available in tablets or in an injectable form.
Long term consequences associated with use of Ketamine may include addiction, flashbacks, memory problems, and the possible development of psychotic illnesses.
Long-term alcohol abuse can potentially damage the frontal lobes of the brain.
The number of lifetime non-medical users of OxyContin rose from an estimated 221,000 in 1999 to 399,000 in 2000.