I am a frequent user Percocet 30 mg. But because its so expensive, I cannot afford do it daily. Other days, I take oxy 7.5, suboxone, or tramadol to prevent sickness and withdrawal. The problem is that I do not have nearly as much energy on these other days. I feel sluggish both physically and mentally. First off, can anyone explain why? Secondly, does anyone know a remedy to increase my energy on these non-percocet days (without using amphetamines)? Thanks.