Lyser-D tablets contains Diclofenac 50 mg and Serratiopeptidase 10 mg which is used for pain relief. Diclofenac is a non-steroidal anti-inflammatory drug (NSAID) which works by blocking the release of certain chemical messengers in the brain that cause pain and inflammation (redness and swelling). Serratiopeptidase is an enzyme which works by breaking down abnormal proteins at the site of inflammation, and promotes healing.