As with other opioid analgesics, central nervous system effects (such as sedation, confusion, and dizziness) are considerations with<unk> . Nausea and vomiting are common. Less common are the gastrointestinal effects of other opioids (mostly constipation). Another side effect experienced by people taking the medication is increased perspiration.
Butorphanol
Levorphanol
Morphine
Oxymorphol
Hydromorphone
Oxymorphone
Noroxycodone
Nalorphine