Bupropion
"This lasts all day; I'm a fast drug metabolizer, so I take 150mg in the am and 150mg in the pm. 

There isn't a come down, like from stimulants. 

It helped my thoughts to come back to a normal pace and stay on-topic. Helped energy levels. Didn't help my ability to pay attention to details. Still spaced out when people were talking to me. BUT it helped me be more present and actually remember to do things. No more losing my keys/phone/shoes/mind every day, or struggling to do simple tasks. Added Adderral for the spaciness. Note that it may counteract/mute the effect of most stims, so your doctor may suggest you adjust your dosage. Because of they way they interact, it actually makes my adderral last longer, and there's zero crash from it."