How long does it take to get a percocet out of your system?

Depending on the amount and length of time taken, usually between 3-5 days for the occasional user. For the heavy user however it could take as long as 7-10 days. There are several factors including amount taken, length of time taken, metabolism speed, weight, hydration, and other drugs and medications taken in conjunction. But to be safe, when taking a drug test for work or probation, I would give at least a solid week of drinking at lest 2 gallons of water and lots of exercise. I do not know of any cleansers on the market that are truly effective in riding the system of the drug but search the internet and see what you get.