Skeletal muscle relaxants are medications that help reduce muscle spasms and stiffness. They work by affecting the central nervous system or the neuromuscular junction. Uses include treating conditions like muscle strains, back pain, and multiple sclerosis. Types include: • Centrally acting relaxants (e.g., cyclobenzaprine, baclofen) work in the brain and spinal cord. • Peripherally acting relaxants (e.g., dantrolene) work directly on the muscles. Side effects can include drowsiness, dizziness, and weakness.