Have Wpw syndrome (not currently being treated for) and detoxing from heavy methadone additiction (3+ years) Should I be concerned?

Certain medications.. ..do increase the chance of heart rhythm problems in people with WPW but we're not certain about methadone. As to methadone withdrawal, it's MANDATORY that you detox under close supervision of an experienced addiction specialist and a cardiologist. You may need an anti-arhythmic drug and a very slow methadone taper. Suboxone can help reduce withdrawal symptoms and detox stress. Dr. Anne.