How Muscle Relaxers Affect the Body and Brain When you take a muscle relaxer, it doesn’t just target your sore muscles. These medications primarily affect your brain and spinal cord, depressing central nervous system activity. This depression slows down nerve signals between your brain and body, which reduces muscle spasms but also creates sedation. You might feel drowsy, dizzy, or mentally foggy after taking these medications. Some people experience a sense of relaxation or mild euphoria, particularly with medications like carisoprodol. Your coordination may suffer, and your reaction times may slow down significantly. These effects make activities like driving dangerous…