Flexeril is a muscle relaxant medication that can be habit-forming if taken in high doses or for a long period. As with other drugs that affect the central nervous system, it is possible to develop a physical or psychological dependence on Flexeril, which can lead to addiction. It is important to take Flexeril only as prescribed by a healthcare provider and to follow their instructions carefully to avoid the risk of addiction. If you have concerns about the potential for addiction with Flexeril, you should discuss them with your doctor.