ADHD
"I have been taking it for several years.  There was a time about a year ago when all the Pharmacies could not get any and I went about a month without.  Being a Service Advisor, I deal with a lot of numbers (Vin, License Plates, etc.). After a few days without, I started reversing a lot of the numbers.  I would see the correct order but would say out loud or write down a reversed version. I had to go slower and double check what I had written.  A positive side effect is it gets me off the couch on the day(s) I have off and motivates me to get stuff done around the house that needs to be done. It kept me up at night at first, but after awhile, I learned not to take it too late in the day. I would recommend it to anyone who has ADHD. "