I was currently taking a low dose of Methadone to help kick Oxycodone withdrawl pain... I started taking it Monday every morning around 5am to thursday... (just 5mg a day) My last dose was Thursday at 5am (3 and a half days ago) I have felt no withdrawl from the drug at all besides tiredness and maybe a headache here and there... should I exspect withdrawl symptoms in the near future do to the half-life of Methadone?