Can you take amphetamines on top of Suboxone?

Yes. Suboxone is an opiate, a downer, and amphetamines (aka speed) are an upper. So the speed will get rid of the sleepiness that Suboxone causes, and the Suboxone will get rid of the jittery feeling the speed causes. However, taking both downers and uppers at the same time is bad for your heart, so be very careful not to take too much of either drug.