narcolepsy
"I was diagnosed with narcolepsy in my late 20's. Today I am 74 years young.  When first diagnosed I was giving Ritalin.  After a couple years that switched me to Dexedrine tablets.  In my early 40's I was switched to Dextroamphetamine time released capsules of 15 milligram 3 a day.  This medicine has made my life very manageable.  Best treatment for narcolepsy.  The cost is my only problem.."