"What are COX-2 inhibitors, and how do they work?
COX-2 inhibitors are a subclass of nonsteroidal antiinflammatory drugs (NSAIDs). NSAIDs work by reducing the production of prostaglandins, chemicals that promote inflammation, pain, a"...
(Generic versions may still be available.)
Symptoms following acute NSAID overdoses are usually limited to lethargy, drowsiness, nausea, vomiting, and epigastric pain, which are generally reversible with supportive care. Gastrointestinal bleeding can occur. Hypertension, acute renal failure, respiratory depression and coma may occur, but are rare.
Anaphylactoid reactions have been reported with therapeutic ingestion of NSAIDs, and may occur following an overdose.
Patients should be managed by symptomatic and supportive care following an NSAID overdose. There are no specific antidotes. Hemodialysis removed only about 2% of administered valdecoxib from the systemic circulation of 8 patients with end-stage renal disease and, based on its degree of plasma protein binding (>98%), dialysis is unlikely to be useful in overdose. Forced diuresis, alkalinization of urine, or hemoperfusion also may not be useful due to high protein binding.
BEXTRA (valdecoxib) should not be given to patients who have demonstrated allergic-type reactions to sulfonamides. BEXTRA (valdecoxib) Tablets are contraindicated in patients with known hypersensitivity to valdecoxib. BEXTRA (valdecoxib) should not be given to patients who have experienced asthma, urticaria, or allergic-type reactions after taking aspirin or NSAIDs. Severe, rarely fatal, anaphylactic-like reactions to NSAIDs are possible in such patients (see WARNINGS Anaphylactoid Reactions, and PRECAUTIONS Preexisting Asthma).
This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 12/8/2004
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