Modafinil
"I've been using Provigil in combination with Wellbutrin for my adult ADD. I'm almost 50 and was just diagnosed 3 years ago. I tried the stimulants and like the way they helped my concentration and focus but I couldn't take them because of my high blood pressure. I've also tried Strattera which worked really well but again I couldn't deal with the side effects (not being able to urinate can be painful). Provigil really helps slow down my racing thoughts but it doesn't seem to help with my concentration or distract ability. I take it first thing in the morning and usually can't get to sleep until midnight or 1.00am. Luckily I work at home so that's not a real problem. I'm glad to see it's worked well for some of the others who have posted comments."