"male age 50, in good shape. i was prescribed this stuff for what i call &quot;brain fog&quot; which i was experiencing three to four times per month and lasted a minimum of 24 hours.  also for attention span - which has been limited as of late. i am on 20mg once a day and graduated up from 5mg a day over 5 weeks. the 1st week i experienced some very slight dizziness and slight nausea. nothing that i would describe as trying or difficult. at about week 3, i started to notice an increase in attention span. after 2 months, i have not had one brain fog episode. i have not noticed a change in mood, though i was not / am not depressed. i will say i am having some of the  best orgasms of my life - and i have been on wellbutrin which does not compare!"