Re: Wellbutrin for ADD
How long have you been on the Wellbutrin? Are you taking any other medications in addition to Wellbutrin? Do you work out or drink caffeine late in the day?
Unlike stimulants, Wellbutrin is a reuptake inhibitor which takes up to a month (or even more) to reach full effect. It will also be active all the time, as the effect is a cumulative one stemming from a buildup of free neurotransmitters over time. You should not ever feel Wellbutrin kick in or wear off. Because of this, I would look for another source of your late day adrenaline rush (though Wellbutrin my intensify the effects of other sources of stimulation by making the chemicals required for stimulation more readily available). The constant feeling of an adrenaline rush is concerning, though, I would suggest discussing it with your doctor.
The action of Wellbutrin is similar to that of SRI antidepressants, but rather than acting on seratonin, it acts on dopamine and norepinephrine, the same neurotransmitters acted on by stimulants. Because of this, it is often used for treatment of ADHD, though less often than stimulants. I was prescribed Wellbutrin for ADHD in conjunction with stimulant therapy and found it to be extremely effective.