GHB is abused as an intoxicant, often in the club, rave and party scene, to produce euphoria and sociability. Small doses can act as a stimulant and aphrodisiac. It is...

K2 and Spice are common street names for synthetic marijuana, produced by combining artificial cannabinoids with traditionally used medicinal herbs and other legal substances.

Ketamine is an anesthetic drug used in human and veterinary medicine, primarily for general anesthesia, although it is sometimes used as a sedative for seriously injured patients and as a...

Marijuana is a preparation of the cannabis plant for use as a psychoactive drug and as medicine. The principal psychoactive constituent of marijuana is tetrahydrocannabinol (THC), one of hundreds of...

Methadone is a synthetic opioid used for pain and to treat addiction in patients with opioid dependence. It is chemically closely related to heroin and morphine and has many of...

Methamphetamine is psychostimulant in the amphetamine class. It has medical uses in the treatment of attention deficit hyperactivity disorder (ADHD) and obesity. It has a high potential for abuse and...

MDMA is synthesized drug in the amphetamine class. It is classed as an empathogenic drug, meaning it produces emotional and social effects that tend to increase a sense of intimacy...

While opiate and opioid are often used interchangeably, true opiates are a group of opioid drugs found only in the poppy plant: morphine (and its derivative, heroin), codeine and thebaine.

Oxycodone, first developed almost a century ago, is a powerful opioid analgesic with serious addictive potential.