Paracetamol (acetaminophen) | NSAIDs | Opiates | Tetrahydrocannabinol
Aspirin | Celecoxib | Diclofenac | Diflunisal | Flurbiprofen | Ibuprofen | Indomethacin | Ketoprofen | Ketorolac | Mefenamic acid | Meloxicam | Naproxen | Piroxicam | Rofecoxib | Valdecoxib | Sulindac
Alfentanil | Buprenorphine | Carfentanil | Codeine | Codeinone | Dextropropoxyphene | Diamorphine (Heroin) | Dihydrocodeine | Fentanyl | Hydrocodone | Hydromorphone | Methadone | Morphine | Morphinone | Nalbuphine | Oxycodone | Oxymorphone | Pentazocine | Pethidine (Meperidine) | Propoxyphene | Remifentanil | Sufentanil | Tramadol