Most popular quantity. Arcoxia (Etoricoxib) (brand name Arcoxia worldwide; also Algix and Tauxib in Italy) is a new COX-2 selective inhibitor (approx. 106.0 times more selective for COX-2 inhibition over COX-1) from Merck & Co. Doses are 60, 90 mg/day for chronic pain and 120 mg/day for acute pain. Currently it is approved in more than 60 countries worldwide but not in the US, where the Food and Drug Administration (FDA) require additional safety and efficacy data for Arcoxia (Etoricoxib) before it will issue approval. Current therapeutic indications are: treatment of rheumatoid arthritis, osteoarthritis, ankylosing spondylitis, chronic low back pain, acute pain and gout. Note that approved indications differ by country.
Like any other COX-2 selective inhibitor, Arcoxia (Etoricoxib) selectively inhibits isoform 2 of cyclo-oxigenase enzyme (COX-2). This reduces the generation of prostaglandins (PGs) from arachidonic acid. Among the different functions exerted by PGs, their role in the inflammation cascade should be highlighted. COX-2 selective inhibitor (aka "COXIB") showed less marked activity on type 1 cycloxigenase compared to traditional non-steroidal anti-inflammatory drugs (NSAID). This reduced activity is the cause of reduced gastrointestinal toxicity, as demonstrated in several large clinical trials performed with different COXIB (see below links on NEJM and The Lancet).
Some clinical trials and meta-analysis showed that treatment with COXIB led to increased incidence of adverse cardiovascular events compared to placebo. Because of these results, some molecules were withdrawn from the market (Rofecoxib, September 2004 and Valdecoxib, April 2005). In addition, the FDA and EMEA (USA and European Community Health Authorities respectively) started a revision process of the entire class of both NSAID and COX-2 inhibitors.
What is the shelf life of the pills?
- The expiry date is mentioned on each blister. It is different for different batches. The shelf life is 2 years from the date of manufacture and would differ from batch to batch depending on when they were manufactured.
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