I think you can could actually Google each drug individually & make an informed guess. I do know enough Nortripyline will eventually stop your heart, but it would be really painful. There is a cocktail online with Amitripyline you can look up which acts similarly. But the recommended combo would be with benzodiazepines, not Trazadone. You want to be sound asleep while you have an extended heart attack. I think Trazadone is the most horrible feeling drug ever. Plus it's probably hard to OD on since it's a psych med - they intentionally design them that way. And I don't think it would keep you asleep when your heart starts failing from the Nortripyline. Btw I spelled every drug wrong - it really annoys me how complicated they make their names. I don't know - it sounds like too much of a gamble. Hope this helps.
I just wanted to add real quick - have you been taking the pamelor long? That drug worked better for my depression than ANYTHING, and I had no sex side effects. Unfortunately it constipated me beyond belief & I had to stop taking it. I'm just asking because if it works for you it's better than considering ctb.