You mentioned that you are using Xanax, which is by the way, a very sedative
drug which will knock down any stimulating effect you might look for from any
drug you might be taking. Prozac is not a stimulant at all and will only affect you serotonin reuptake inhibition. See, serotonin, in contrary to dopamine (triggered by amphetamines) is most likely to knock you down as will do any serotonin acting drug.