The most common side effects experienced with SUNOSI include headache, nausea, decreased appetite, anxiety, and insomnia. These are not all the possible side effects of SUNOSI. Call your healthcare provider for medical advice about side effects. You may report side effects to the FDA at 1﻿-﻿800﻿-﻿FDA﻿-﻿1088 or visit www.fda.gov/medwatch