Stimulants make me tired too. I had a pdoc ask me if I can drink a cup of coffee and go right to sleep. My answer was yes. She asked about a couple more things that were full of caffine and my answer was yes again. That was when she diagnosed me with ADD. So I believe if you truly have ADD.My pdoc's solution was to give me a high dose and that worked beautifully. I was taking. 60mg of vyvanse and I never felt better.