"vyvanse has helped me immensely as my focus is much better and i have had no ill effects whatsoever. the loss of appetite effect has been very welcome with growing older (i am 46). i have struggled with a sedentary lifestyle and my weight kept increasing. since taking vyvanse i have lost 50lbs and that has helped my sleep apnea to the point that i feel much better in the morning and i am not at the same weight i was when i got married 17 years ago. i am 200 lbs 6&#039;1&quot; and have worked up from the initial 10mg dosage to the max now at 70mg. i have been on vyvanse for about a year and a half."