The active constituent, Ketorolac Tromethamine, present in Acular Eye Drops comes under the category of drugs called Non-Steroidal Anti-Inflammatory Drugs (NSAIDs). It is a schedule H drug available at local pharmacies and online drugstores. It was patented in 1976 and was approved for therapeutic use in 1989. Acular Eye Drop medication is not safe for use in persons suffering from severe kidney injury. It is a prescription based medication and does not develop an addiction. The chemical formula and molecular weight of the active constituent are C15H13NO3 and 255.27 g/mol respectively. The other uses of Ketorolac include dysmenorrhea, idiopathic pericarditis, etc. The principal action responsible for its anti-inflammatory, antipyretic and analgesic properties is the blocking of prostaglandin synthesis. The active constituent, Ketorolac is a non-selective NSAID and it produces its effect by blocking both COX-1 and COX-2 enzymes, which are usually responsible for conversion of arachidonic acid to prostaglandins. Prostaglandins are the natural substances present in the body that produce symptoms such as pain and inflammation.