"i have been taking vyvanse 30mg for 2 weeks for adult adhd. it has been very helpful for me to stay on task at work and get things done that normally i would have a hard time with. i used to get very overwhelmed with what needed to be done and completely shut down, not getting anything done at all! then beating myself up for being a procrastinator etc. i have not had any issues with insomnia or any other side effects, besides the normal appetite suppression during the day, which as resulted in an 8lb weight loss in 2 weeks. no complaints here as i need to lose about 20. i recommend not drinking more than 1 or 2 cups of coffee while taking this. i did once and was jacked up. not a good feeling. i highly recommend taking this if you are an attention deficit"