While insomnia medication can be effective in the short-term, it is important to be aware of the potential side effects. Common side effects include dizziness, dry mouth, and gastrointestinal issues. In some cases, more serious side effects have been reported, including hallucinations and changes in mood or behavior. As a result, it is important to speak with a doctor before taking any insomnia medication. They can help to determine if the potential benefits outweigh the risks. If you do decide to take insomnia medication, it is important to follow the instructions carefully and to report any unusual side effects to your doctor.