Opioids

Similar term(s): opiates.

Class of drugs (e.g., heroin, codeine, methadone) that are derived from the opium poppy plant, contain opium, or are produced synthetically and have opium-like effects. Opioid drugs relieve pain, dull the senses, and induce sleep.

Source: San Francisco AIDS Foundation Glossary  

Effects of prolonged use of Opioids include long-term changes in certain brain receptors, and changes in learning and in the response to stress.

Opioids make up one of the four groups of psychoactive drugs, next to depressants, stimulants, and hallucinogens.

Source: GreenFacts

Alcohol - Hallucinogen - Nervous system - Opioids - Stimulants

GreenFacts Summary on Psychoactive Drugs Tobacco, Alcohol, and Illicit Substances:

• 3.3 How do different psychoactive drugs act in the brain?

Español: Opiáceos
Français: Opioïdes
Nederlands: Opioïden

Psychoactive Drugs

Illicit drugs in Europe

Benzodiazepines