One of the most dangerous side effects of OxyContin is addiction. Anyone who uses OxyContin for a significant amount of time is sure to feel this side effect.
Getting the full side effects of the tablet all at once is like shooting high grade heroin but it is more addictive and more dangerous. OxyContin suppresses the respiratory system and when combined with alcohol or other depressants it is often deadly. Often the user goes to sleep and his respiration slowly decrease until breathing stops completely.