I'll put this up again.

Methadone is the ONLY opiate drug that can affect the heart.
New data has surfaced about it..which many doctors are unaware of.

It is convenient, cheap, and effective for many.

But you really should have an EKG to rule out any long QT traits if you
have them. (this is a genetic variance).

Here is a link to my Methadone post:
http://neurotalk.psychcentral.com/showthread.php?t=1120
post #4 Please read it carefully.

In the news recently was the death of Anna Nicole Smith's son, who died as
a result of Methadone mixed with antidepressants. (both can prolong QT)
People with low magnesium and/or potassium events may also have
a reaction to methadone. Diuretics, stomach flu, or poor diet may predispose one to low magnesium, and hence QT becomes more critical.