Trypsin, Rutoside, Bromelain and Aceclofenac. Trypsin and Bromelain are enzymes. They increase blood supply and make the body produce substances that fight pain and swelling. Rutoside is an antioxidant which protects the body from damage by chemicals (free radicals) and further reduces swelling. Aceclofenac is a non-steroidal anti-inflammatory drug (NSAID) which works by blocking the release of certain chemical messengers (prostaglandins) in the brain that cause pain and inflammation (redness and swelling).