"was placed on vyvanse after extreme weight loss on adderall. started at 20mg, upped to 40mg, then upped to 40mg 2x a day. i got my appetite back, but the medication really did nothing else for me. i went into rages and had huge anger problems for no reason. anything could set me off! i could barely sleep or focus at work/school. basically, i gained back the weight i had lost, but everything else sucked. i couldn&#039;t make it more than 6 months, my doctor switched me to adderall xr."