Table 1.

Classification of NSAIDs  according to their  selectivity for COX Isoenzymes.

Selectivity	Drugs
Weak COX inhibitors	Acetaminophen,Salsalate
Inhibitors of COX-1 and COX-2	Acetylsalicylic acid, Piroxicam, Indomethacin, Sulindac, Tolmetin, Ibuprofen, Naproxen, Fenoprofen, Meclofenamate, Mefenamic acid Diflunisal, Ketoprofen, Diclofenac, Ketorolac, Etodolac, Nabumetone, Oxaprozin, Flurbiprofen
Preferential COX-2 inhibitors	Nimesulide, Meloxicam
Selective COX-2 inhibitors	Celecoxib, Rofecoxib,Valdecoxib, Etoricoxib, Parecoxib, Lumiracoxib