Clonazepam works by increasing levels of a calming chemical in your brain. This can relieve anxiety, stop seizures and fits or relax tense muscles. The most common side effect is feeling sleepy (drowsy) during the daytime. Clonazepam is not likely to be addictive if you take it for a short time (2 to 4 weeks). If you take clonazepam for more than 2 to 4 weeks, your dose will need to be reduced gradually before you stop taking it.
