"having add has been a bumpy ride for me, especially when it comes to finding the correct medication. as a mechanical engineering major, my work load is very heavy and being able to focus is essential and adderall xr certainly gives me the ability to do so. i&#039;ve been taking 30mg xr for about 2-3 years. prior to adderall i took vyvanse and concerts which did not work as well for me as adderall. it also took me a while to work adderall into my schedule as efficient as possible as i don&#039;t like taking it everyday. but i&#039;ve got to say i found a happy medium that allows for the least amount of side effects and it is working absolute wonders for me."