Hi Snoopy, Long Time - I have now massive cog prob. Sorry but no answer 4 you. However, Provigil did nothing 4 me. I've got adderall but that is for fatigue. I've not done well on it so far but only took approx 3X. Last time I got the spins....I just took one to see reaction. Get bk to u on that. If it wks it is supposed to improve cog too. just tossing at an idea. Wishing u the best Hun.