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| Trade names | Equioxx, Previcox |
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| Routes of administration | By mouth |
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| Formula | C17H20O5S |
| Molar mass | 336.40 g·mol−1 |
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Firocoxib, sold under the brand namesEquioxx andPrevicox among others, is anonsteroidal anti-inflammatory drug of theCOX-2 inhibitor (coxib) class, approved for use in horses (Equioxx) and for use in dogs (Previcox).[2][4][9] Firocoxib was the first COX-2 inhibitor approved by the U.S.Food and Drug Administration for horses.[10] Firocoxib is not intended or approved for use in human medicine.[2][4][5][6][11]
Firocoxib, manufactured by Merial, was approved for veterinary use in the United States for dogs in July 2004,[12] and for horses in July 2007, as an oral paste (Equioxx) and July 2016, as tablets.[13][14]
Firocoxib is also available as ageneric medication for horses[14] and for dogs.[12]