How Muscle Spasm Medication Works to Relieve Pain and Stiffness If you’ve ever experienced a sudden tightening in your muscles that made it difficult to move, you know how uncomfortable muscle spasms can be. They can strike after an intense workout, an awkward movement, or even while you’re sleeping. For many people in New York and across the United States, muscle spasm medication can be an important part of recovery, especially when paired with...