Respiratory Depression
Apnea
Hypotension
Syncope
Bradycardia
Urinary retention
Seizures
Anaphylaxis
Nausea
Rash
Headache
Fatigue
xerostomia
constipation
Tremor
urinary retention
Hydromorphone
Morphine
Ropivacaine
Butorphanol
Meperidine
Cetacaine
Codeine
Dextromethorphan