"i have been using 70 mg vyvanse and it was working perfectly for a month, in fact, it still works.  the problem is that my blood pressure, which was perfect, went up 30 points in a month and now i&#039;m at risk for high blood pressure. also, i lost weight which i must gain back now.  i&#039;m only 16 and this is bad. i&#039;m lean and athletic and have never had any health issues until this. besides all of this, i really like vyvanse and hopefully won&#039;t have to stop taking it."