It is important to disclose to your doctor any history of depression, mania, or mental health problems. In some people, taking stimulants like Modvigil 200 mg can cause new or worsening symptoms of these disorders. It is also important to tell your doctor about any medications and supplements you are taking. This includes over-the-counter medications and recreational medicines. The treatment for serotonin syndrome is to stop the medication that is causing the high levels of serotonin. This will usually help resolve the symptoms within a day. Your doctor may also prescribe other medications to help manage your symptoms.