ADHD
"It&#039;s the only ADD med that actually works for me. The higher the dose the clearer I think (male 5&#039;11 185). However, if my dose is over 40mg (I&#039;ve taken as much as a 100mg) then I get erectile dysfunction, penis shrinkage and dry mouth. Once I lowered my dose to 40mg I stopped concentrating as good but the side effects went away too."