Can I quit taking my 70mg methadone dose tapered down from a 105mg. dose, and then switch to suboxone in a few days? Or will this put me into severe withdrawl. I guess my question is how long does it take for that methadone to get out of my system completely if I quit cold turkey from the 70 mgs. I was doing the 105mg dose for about a year and a half? Also, when using suboxone after a heroin dose, I'm the type of person that would go into severe withdrwal if the H was still in my system. I had t wait at least the 12hrs. So.....