Diclofenac Sodium (active) 140 mg per patch; Excipients: Propylene Glycol, Sodium Sulphite (E221), Butylated Hydroxytoluene (E321), Aromatic Agents, Macrogol Lauryl Ether, Diisopropyl Adipate, Glycerol, Sorbitol, Sodium Polyacrylate, Carmellose Sodium, Basic Butylated Methacrylate Copolymer, Silica (colloidal anhydrous), Natural Light Kaolin, Disodium Edetate, Dried Aluminium Potassium Sulphate, and Tartaric Acid.