... I have every symptom except hyperactivity. It seems to help some,but it wears off in 5-6 hours. Then I take another lower dose 20 mg and five hours later I take a 5 mg Dexedrine. It seemed to work at first but now I feel sick: nausea and stomach ache. Should I try another stimulant? I'm also taking Lomictal 200mg for depression (with a list of drugs to deal with its sides). I've been on Strattera, wellbutrin, every ssri out there. This Vyvance is not working. Any suggestions?