Pain O Soma 500 Mg (Carisoprodol) is a muscle relaxant, which has carisoprodol as its active ingredient and it works on the [color=var(--ast-global-color-0)]Central nervous system to relieve pain in muscles. It is usually administered alongside bed rest and physiotherapy in the management of muscle injuries and spasms and has been seen to be quite helpful when used under the supervision of a doctor.