"i have used many adhd medicines in the past and i never knew what attention i was lacking without vyvanse. the first week of taking 30mg is very different from the following weeks. in the first week i felt very conscious of the effects and it felt great but the following weeks felt like i was lacking. i am 18 years old so i had an upcoming sat so i took 2 of my 30mg pills. i am 150lbs and in retrospect it was a bad idea. the whole day of the sat i felt explosive energy and extremely motivated to work on questions. i am now on the first day of prescribed 60mg and i have a much greater work motive and i am constantly fueled with new productive ideas for tasks to complete. if you feel like you are lacking in motivation for work i recommend it"