Present invention relates to aqueous compositions comprising
cyclooxygenase-2 (COX-2) inhibitors, preferably
Etoricoxib or
Celecoxib or Valdecoxib or Paracoxib or salts thereof at least two solubilizers at 4.2% w / v to 19% w / v, preferably between 4.2% w / v to 18% w / v having
viscosity in range of 1.0 cps to 3 cps, wherein the
Etoricoxib and
Celecoxib or salts thereof are present in amount
ranging from 0.14 mg to 4 mg. The composition is suitable for the
parenteral route of administration primarily for ready to dilute and ready to infuse which alternatively can be administered as intramuscular, intraarterial, intraocular, intraventricular, intravenous routes; also for subcutaneous, cutaneous delivery. The invention further provides a method for preparing the said composition.