Easymeds Pain Soma 500mg (carisoprodol) is a several muscle relaxer, it works by blocking pain sensation between the nerves and the brain. And that's why our muscles get relaxed. What is Pain O Soma 500mg? Pain O Soma 500mg is a prescription medicine that is used for treating muscle pain effectively. It also offers quick relief from the discomfort which is often caused by muscle contractions. In order to experience the best possible effect, it is better to intake the medicine along with proper rest and physical therapy. Carisoprodol is the active ingredient present in the drug that lowers down the sensations of pain between your brain as well as the nerves. It is important for you to know that Soma 500mg (pain o soma 500mg) is mainly recommended by the doctor for 2-3 weeks.