vyvanse relies heavily on the second pass effect to activate, which is what makes it resistant to abuse. it also means if you don’t make sure to eat lunch the s

vyvanse relies heavily on the second pass effect to activate, which is what makes it resistant to abuse. it also means if you don’t make sure to eat lunch the second half of the dose doesn’t kick in until supper and you end up being awake until 4-5am. ask me how i know…