"i started taking 30mg vyvanse about 2 months ago. prior to this, i&#039;ve been unmedicated for adhd for about 20 years. for this time i have been coping with inattentiveness and failing school grades. 



when i first took vyvanse i noticed the effects after about 30 minutes. my head felt very focused and conversations with people became very clear. for the first time in a long time i could listen to someone for longer than 1 minute without my mind trailing off to another thought. 



i try to take vyvanse as earlier as possible. usually i take it around 8:00am with 9:00am being the latest. taking vyvanse after this time tends to keep me up past midnight. vyvanse lasts about 12-15 hours for me."