My son was addicted for a year to oxycontin, spent four months on methadone, up to 80 mgs. at one point. Dropped his dose to 35 mgs., then at his doctors instruction took his last dose of methadone on Friday. Nothing on Sat. or Sunday. Then doctor gave him 8 mgs of subutex Monday. Bad idea. He was very sick, only feeling some better today, the fourth day. The doctor started him on 4 mgs. morning and night, and then had him to increase the dose to 8 mgs. morning and night yesterday. He is very weak, has no energy, and is still very shaky. Doctor says stick with his dose. I worry its too much.