As Jeremy just said, if you've already taken the suboxone the methadone will have no effect. The two don't mix well at all so I wouldn't do what you're thinking about!
I don''t really know. Are you a methadone addict wanting to take some suboxone/subutex or a suboxone/subutex addict wanting to take some methadone?
If you are a methadone addict wanting to take some suboxone/subutex, you risk precipitated withdrawals.
If you are a suboxone addict wanting to take some methadone, I doubt you will feel anything to write home about.
Either way, It might be prudent to consult a doctor or maybe post your question on bluelight or forums of similar ilk.
All the best. I suspect this post will be deleted shortly so I just hope you get my message before you do anything silly.
Kind regards, Jeremy (ex addict)
3 years 6 months drug and alcohol free