"i&#039;ve been on effexor xr for about 9 years now (150mg once a day). i originally started taking it for a.d.d. and mild depression. it has worked incredibly for me. i went from no attention span to extremely focused. i also went through some events that increased my depression, and by upping the dosage, i was fine. the only side effects i&#039;ve had are extreme withdrawal symptoms if i miss a dose (severe headaches and jitters), and a decreased sex drive. i would strongly recommend this drug."