"i was diagnosed three years ago with adult add (and i&#039;m 46!). first was prescribed adderall, but i found that even the slow-release capsule wore off quickly, leaving me exhausted and crashing at work, scarfing down cups of coffee. my doctor switched me by vyvanse, and it&#039;s been much, much better. i am better able to focus, it lasts longer. however, it still doesn&#039;t get me through the whole day and i find i&#039;m extremely tired at night. also, sometimes i get caught up in the trivial details of both work and home projects. but on the whole, i am far better off since i began vyvanse. i wish that 70mg was not the highest recommended amount, but i stick to it."