Serious adverse reactions which may be associated with OxyContin Tablet therapy in clinical use are those observed with other opioid analgesics, including respiratory depression, apnea, respiratory arrest, and circulatory depression, hypotension, or shock.

The non-serious adverse events seen on initiation of therapy with OxyContin are typical opioid side effects. These events are dose-dependent, and their frequency depends upon the dose, the clinical setting, the patient?s level of opioid tolerance, and host factors specific to the individual. They should be expected and managed as a part of opioid analgesia. The most frequent (>5%) include: constipation, nausea, somnolence, dizziness, vomiting, pruritus, headache, dry mouth, sweating, and asthenia.

In many cases the frequency of these events during initiation of therapy may be minimized by careful individualization of starting dosage, slow titration, and the avoidance of large swings in the plasma concentrations of the opioid. Many of these adverse events will cease or decrease in intensity as OxyContin therapy is continued and some degree of tolerance is developed.

Clinical trials comparing OxyContin with immediate-release oxycodone and placebo revealed a similar adverse event profile between OxyContin and immediate-release oxycodone.

FDA informed healthcare professionals of criminal charges and civil liabilities brought against Purdue Frederick in connection with several illegal schemes to promote, market and sell OxyContin, a powerful prescription pain reliever that the company produces. The manufacturer's sales force was trained to make false claims about the product to healthcare professionals, thereby, misbranding OxyContin by illegally promoting the drug as being less addictive, less subject to abuse, and less likely to cause tolerance and withdrawal than other pain medications. These practices falsely promote the product and may cause health risks for consumers.