1. Fentanyl may produce more prolonged respiratory depression than other opioid analgesics . 2. Opioid analgesics may also be appropriate in many situations.3. Opioid analgesics may be necessary to relieve pain.4. Particularly, mixed mu receptor antagonist opioid analgesics can cause dose-related psychotomimesis. 5. Opioid analgesics are recognized as useful agents but are not recommended as first line treatments.6. "' Proheptazine "'is an opioid analgesic from the phenazepine family. 7. "' Metheptazine "'is an opioid analgesic from the phenazepine family. 8. "' Oxymorphazone "'is an opioid analgesic drug related to oxymorphone. 9. For example, morphine and hydromorphone are two different opioid analgesics that frequently get confused. 10. Relative to morphine, efficaciousness and greater tolerability in comparison to currently available opioid analgesics .
