<unk>  is an analgesic opioid that is FDA approved for the {{{indicationType}}} of chronic pain, pain (moderate to severe) and premedication for anesthetic procedure - Surgical procedure.   Common adverse reactions include cardiovascular: hypotension, dermatologic: pruritus, gastrointestinal: constipation, nausea, vomitingpsychiatric: altered mental status, disturbance in mood.
Levorphanol
Oxybuprocaine
Proxymetacaine
Butorphanol 
Deanol
Hydromorphone 
Demecolcine
Oxymetazoline hydrochloride