Rapisone DSR Capsule is used to treat lower back pain. It contains Eperisone and Diclofenac which work by relaxing skeletal muscles and blocking chemical messengers that cause pain. In some cases, this medicine may cause side effects such as nausea, vomiting, stomach pain, heartburn, diarrhoea, indigestion, flatulence, loss of appetite, headache, weakness, drowsiness, and dizziness. Inform the doctor if you are pregnant or breastfeeding, taking any other medication, or have any pre-existing medical conditions.