Muscle relaxants are medications that help reduce muscle tension and spasms. They are often prescribed for conditions like back pain, neck pain, or injuries. These drugs work by affecting the central nervous system or directly targeting the muscles, leading to relaxation and relief from discomfort. There are two main types of muscle relaxants: centrally acting and peripherally acting. Centrally acting muscle relaxants, such as carisoprodol and cyclobenzaprine, work on the brain and spinal cord, while peripherally acting muscle relaxants, like dantrolene, target the muscles themselves. Both types can help improve mobility and reduce pain, but they may also cause side effects like drowsiness.