So to start off, Yesterday around 10:00AM I took 100 mgs. I have a decent tolerance to amphetamines. Well later on that day after the ride, the come down hit and for some reason it was extra bad. So around 2:00AM today I took another 150 mgs. And then of course the usual euphoria and I said ?Ok, I?m done for a few days?. Well it?s currently 2:22PM and I still feel the effects of my vyvanse but it?s so weird. I?m feeling definite dysphoria, like a comedown almost, but music still sounds so great to me. I?m very nauseated, and I think i?m seeing shadows out/hallucinations. I?ve only been up for one night so I don?t think Im delirious. Could it be an overdose that am I experiencing?