"i am a 36 year old african american female graduate student who is currently applying to med school, while working full-time in a hospital pharmacy. i had been on effexor 150mg daily for several years for depression. last march (2011), i was diagnosed with adhd by a lcsw with 30 years of experience in the field. initially, i was on concerta 36mg, but switched to the less expensive adderall xr 20mg daily. i find that my concentration is much better, but i have lost 30 lbs. &amp; have a decreased libido. after taking adderall xr 20mg for only 3 months, i saw significant improvements in my mcat score (8th mcat attempt)! this year, i am will definitely obtain a competitive score &amp; finally secure my spot in med school. thanks adderall xr!"