"my experience was one of &quot;thank goodness&quot; until 17 days after. now i am very irratable with little or no patience. i am seeing my doctor today for an update and will ask him to let me try (again) dexedrine. i did not want to go off of it but i think because vyvanse is new, well you can fill in the rest. the dexedrine has been around for a long time and i feel it is above and beyond others with knowing what to expect all the time. good luck to all of you. god bless."