Oxycodone is an opiate analgesic used to alleviate moderate-to-severe pain, according to WebMD. It acts in the brain by changing the way the body responds to pain.
Oxycodone comes in many forms, such as liquid, concentrated solution, tablet and capsules, which are prescribed to be taken every four to six hours. Oxycodone also comes in extended-release form, which is taken every 12 hours, according to MedlinePlus. Extended-release oxycodone is usually prescribed to people in severe pain who need continuous relief throughout the day.
There are side effects of taking oxycodone, such as headache, mood changes, flushing and weakness. Severe side effects indicating a possible overdose include fast or slow heartbeat, chest pain, extreme drowsiness and lightheadedness, claims MedlinePlus.