"i&#039;m 19 and i started taking 100mg vyvanse a day when i was 17. before vyvanse i took focalin. i love vyvanse except for the fact that it doesnt last for the full 12 hours. when i first started on it, my senior year in high school after i had my daughter. i had never felt so confident. i made high honors and was like smart for the first time. i was capable of being focused of what was only going on in the classroom and didn&#039;t have to worry about anything besides school. i just really hated when i would crash because then i would get tired and then didn&#039;t feel like really doing anything. i do notice side effects but other then that i think it&#039;s worth taking."