So today I took Vyvanse for the first time ever, and is my first time ever taking a medication for ADHD or ADD and I came home early from school because I'm experiencing all of these weird side effects like Jittering, I'm shakey, very drowsy, I'm tired, sweating, not alot of energy, and I'm not sure if its just me but I'm very hungry and I really don't feel like eating, is it just that I have no appetite while on this drug? Or I just don't have enough energy? If this drug makes me have no appetite I don't know If I want to take this drug because I don't want to starve myself, is all of this normal for my first time ever taking this type of medication? By the way I only took 1 30mg tablet.