Oxycodone hydrochloride is a Class C-II controlled substance. It acts as an agonist at specific opioid receptros in the CNS to produce analgesia, euphoria, and sedation; the receptors mediating these effects are thought to be the same as those mediating the effects of endogenous opioids (enkepalins, endorphins).

It's for Relief of moderate to moderately-SEVERE pain.

Contraindications:
hypersensitivity to narcotics
diarrhea caused by poisoning (before toxins are eliminated)
pregnancy (readily crosses placenta; neonatal withdrawal)
labor or delivery (narcotics given to the mother can cause respiratory depression neonate; premature infants are at special risk; may prolong labor)
bronchial asthma
COPD (chronic obstructive pulmonary disease)
cor pulmonale (failure of the Right Ventricle)
respiratory depression
anoxia (absence of Oxygen)
increased intracranial pressure
AND FINALLY
lactation.