Strong Opioids Agonist
Alfentanil
Fentanyl
Remifentanil
Sufentanil
Heroin Hydrocodone Oxycodone Hydromorphone Oxymorphone Morphine
Methadone
Meperidine
Tapentadol
Moderate / Low Agonists
Codiene
Mixed agonist antagonist and partial Agonist
Buprenorphine
Butorphanol
Nalbuphine
Pentazocine
Antagonist
Nalmefene
Naloxone
Naltrexone
Other Analgesic
Tramadol