An opioid analgesic (also known as a narcotic analgesic) is a drug used in the treatment of pain that acts on specific receptors within the CNS. Drugs in this classification include codeine (a moderately potent analgesic) and morphine (a potent one).
- natural opium alkaloids
- morphine
- opium
- hydromorphone
- nicomorphine
- oxycodone
- dihydrocodeine
- diamorphine
- papaveretum
- codeine
- phenylpiperidine derivatives
- ketobemidone
- pethidine
- fentanyl
- diphenylpropylamine derivatives
- dextromoramide
- piritramide
- dextropropoxyphene
- bezitramide
- dextropropoxyphene
- benzomorphan derivatives
- pentazocine
- phenazocine
- oripvaine derivatives
- buprenorphine
- morphinan derivatives
- butorphanol
- nalbufine
- other opioids
- tilidine
- tramadol
- dezocine