Research indicates that, like cocaine and other abused drugs, opiates activate the brain's reward system causing pain relief, a sense of euphoria and pleasure.
The human body actually produces the chemical GHB naturally and in very small amounts.
Similar to addiction to illicit drugs, misuse of as well as addiction to prescription drugs can have adverse physical and psychological consequences, including dependence and addiction.
The effects of LSD can are typically experienced by the user within 40 to 60 minutes, and have been reported to last for up to six to eight hours.