Respiratory Depression
Apnea
Syncope
Bradycardia
Seizures
Anaphylaxis
Nausea
Rash
Headache
Fatigue
xerostomia
constipation
Tremor
transaminitis
Oxycodone
Hydrocodone
Codeine
Morphine
Opioids
Acetaminophen
Tramadol
Ecstasy 