What sort of problem is an ampetamine overdose?

High metabolism. Amphetamines cause increased metabolism in general. An overdose has many different symptoms related to increased metabolism or hyperfunction.
Risky. Amphetamines and their products such as crack may kill even young people. We have seen instant death, to very aggressive lung failure, rapid heart rate, extreme high blood pressure, strokes, heart attacks. Nonfatal overdoses recover after 24-48 hours.