593647 Disclosed is a pharmaceutical formulation which comprises an aqueous solution comprising from 1 % to 5% (w/v) of a pharmaceutically acceptable salt of diclofenac (2-(2,6-dichloranilino) phenylacetic acid), from 3% to 30% (w/v) of at least one polyoxyalkylene ester of a hydroxy fatty acid, and water as the main component.