So, lemme get this straight, you're NOT on methadone this time..? You'd just be coming off percs AND vicodin, or just percs? Sweety, I'd go through perc or vic withdrawal every day for a YEAR, to avoid methadone & oxy withdrawl. Methadone is the HARDEST and LONGEST. You did that, then you CAN do this. Vics, for myself, (26 female, 200 lbs, 5'10, slower metabolism) lasted 2 1/2, or 3 days. Percs, maybe 3 or 4 days. Honey, this will be easier than methadone or oxy, 100xs over.